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Diager Twister Plus 110: The 2-Cutter Head and TRI-ZONES Helix Explained

Author Zhonghuan Engineering Team
Published 2026-10-26
Reading Time 7 min read

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Diager Twister 2 Plus English overview with the TRI-ZONE flute, carbide tip contact points and concrete-drilling applications
Figure 1.0: Diager Twister Plus 110: The 2-Cutter Head and TRI-ZONES Helix Explained Overview

Key Specification / Takeaways

  • 01. Twister Plus, reference 110, is Diager’s two-cutter SDS-Plus concrete-drilling family, combining a concrete-breaker tip with a Z-line centring feature.
  • 02. TRI-ZONES names a variable three-zone helix: clearance near the tip, acceleration of debris to the rear, and extraction towards the hole exit.
  • 03. The official reference table spans Ø4–30 mm and selected overall lengths from 110 to 1000 mm; each diameter has its own available combinations.
  • 04. Order diameter, overall length and working length separately. The pictured 100C four-piece set and 102C seven-piece set contain different size/length mixes.
  • 05. We turn the two-cutter benchmark into an OEM specification covering tip geometry, carbide, brazed joint, flute transition, dimensions and sample acceptance.

Where Twister Plus 110 Fits

Diager Twister Plus 110 is built around a practical professional-drilling combination: a carbide concrete-breaker tip for penetration, a Z-line centre for starting the hole, and a variable helix for carrying dust away. Diager positions the range for fast drilling in concrete and other building materials.

The Twister 2 Plus name also appears on product literature and packaging. Diager lists the family as Twister Plus reference 110. The original tip, helix and packaging views below show the construction and dimensions relevant to purchasing.

Original Twister Plus overview with the full bit, tip detail, drilling application and material icons.
Original Twister Plus overview with the full bit, tip detail, drilling application and material icons.

Two Cutting Edges and a Z-Line Centring Tip

A two-cutter head has two main cutting edges across the carbide tip. The centre and cutting profile make a meaningful difference to how that head starts and breaks the material. On Twister Plus, Diager calls these features the concrete-breaker tip and the “Z” line centring tip.

The centre concentrates the initial contact so the bit can establish the hole position. The surrounding carbide edges break the concrete under the hammer action. When comparing samples, examine the centre-point profile, the supported carbide section, the cutting edges and the transition into the flutes at the same nominal diameter.

The English overview labels three contact points on the carbide tip. These describe the tip’s contact geometry; Twister Plus 110 is classified by its two cutting edges.

Original carbide-tip close-up: two cutting edges and the shaped centring region.
Original carbide-tip close-up: two cutting edges and the shaped centring region.
Original comparison image illustrating the Twister Plus concrete-breaker tip in use.
Original comparison image illustrating the Twister Plus concrete-breaker tip in use.

TRI-ZONES: Three Jobs Along the Helix

Read the supplied TRI-ZONES diagram from the carbide head towards the shank. Diager gives the three regions different tasks along the debris path:

Original TRI-ZONES diagram: clearance, acceleration and extraction from the head towards the shank. Click to view the full image.
Original TRI-ZONES diagram: clearance, acceleration and extraction from the head towards the shank. Click to view the full image.
Zone in the original diagramPosition / roleWhat it contributes
1 — ClearanceImmediately behind the cutting headSpace to clear a high volume of broken material from the cutting face
2 — AccelerationFollowing transport regionMoves drilling dust towards the rear of the bit
3 — ExtractionRearward part of the illustrated helixThe maker describes a compression/decompression profile that helps carry fine dust towards the hole exit

“Three zones” describes the helix along the bit. It is separate from the two cutting edges at the tip. For an OEM sample, compare groove depth, pitch, core section and the transitions between regions together; these determine whether the head and flute work as a complete drilling system.

Match the Bit to the Concrete and the Hammer

Diager lists concrete, stone, brick and breeze block for Twister Plus. Its catalogue illustrates the SDS-Plus platform with rotary hammers below 5 kg; use the hammer manufacturer’s permitted diameter range to select the actual machine. For hollow or fragile masonry, choose the drilling mode and feed to suit the material and the anchor instructions.

For routine concrete and masonry holes, the two-cutter combines straightforward starting geometry with an open dust path. Where repeated rebar contact dominates the job, compare a head intended for reinforced concrete, such as Diager RockFaster, and review the planned bar intersections before drilling.

Drilling taskSelection focus
Routine concrete / masonry holesAccurate starting, completed-hole time, dust clearance and worn hole diameter
Deep holesAvailable working length, straightness, flute transport and the hammer’s capacity
Frequent reinforcement encountersA reinforced-concrete head architecture and the project’s approved drilling method
Original German-language Twister 2 Plus reference sheet with tip and application views.
Original German-language Twister 2 Plus reference sheet with tip and application views.

Diameter, Overall Length and Working Length

The reference table on the official product page covers Ø4–30 mm, with selected overall lengths from 110 to 1000 mm. These are the family’s endpoints, not every possible diameter/length pairing.

On the page, L totale means overall length and L utile means working length. For example, 110D06L0260 is Ø6 mm, 260 mm overall and 200 mm working length; 110D08L1000 is Ø8 mm, 1000 mm overall and 940 mm working length. Read all three fields from the selected SKU.

Item codeD (mm)Overall length (mm)Working length (mm)
110D04L0110411050
110D05.5L01605.5160100
110D06L02606260200
110D06.5L02106.5210150
110D08L04108410350
110D08L100081000940
110D10L061010610550
110D12L031012310250
110D16L046016460400
110D25L1000251000940
110D30L046030460400

Selected references from Diager’s official table. Use the exact item code when ordering or comparing samples. Diager Twister Plus 110.

Single Bits, Bulk Packs and Mixed Sets

The pictured 100C four-piece set contains Ø5, 6, 8 and 10 mm bits, all 160 mm overall. The 102C seven-piece set combines Ø5, 6 and 8 mm at 110 mm overall with Ø6, 8, 10 and 12 mm at 160 mm overall. The repeated diameters have different reaches.

Choose a mixed set for a contractor’s working assortment, and single-SKU or bulk packs for replenishing heavily used sizes. Keep set reference, quantity, diameter and length mix distinct in a distributor’s stock list.

100C four-piece set: Ø5, 6, 8 and 10 mm, all 160 mm overall.
100C four-piece set: Ø5, 6, 8 and 10 mm, all 160 mm overall.
102C seven-piece set: three bits at 110 mm overall and four at 160 mm overall.
102C seven-piece set: three bits at 110 mm overall and four at 160 mm overall.
Loose-bit tube packing reference; specify the actual pack quantity by order.
Loose-bit tube packing reference; specify the actual pack quantity by order.

Developing a Zhonghuan OEM 2-Cutter Range

At Zhonghuan, we manufacture self-centring two-cutter SDS drill bits for distributors and tool brands. We coordinate the carbide tip, steel support, brazed joint and dust-transport geometry around the intended drilling task. Your approved drawing and sample define the supplied construction.

Proposed configuration A: a self-centring two-cutter SDS-Plus range for routine concrete and masonry, with the size mix and packaging selected for your market. Proposed configuration B: an application-tuned range for abrasive stone or deeper holes, with carbide, flute transitions and sample-drilling criteria confirmed by our engineering team.

Send the required diameters and working lengths, hammer model, target material and quantity. We can confirm the sample plan, marking, packaging and quotation. See our self-centring 2-cutter OEM programme for the manufacturing route.

Discuss a 2-cutter SDS-Plus OEM range

Frequently Asked Questions

Is Diager Twister Plus a two-cutter or a three-cutter?

Twister Plus reference 110 is a two-cutter SDS-Plus family. TRI-ZONES refers to three regions of the helix, not three cutting edges.

What does the Z-line centring tip do?

It is the shaped centre of the carbide tip used to establish the hole position during the start. Diager combines it with a concrete-breaker cutting profile.

What does 110D06L0260 mean?

The official table identifies it as a 6 mm bit with 260 mm overall length and 200 mm working length. Confirm the full SKU rather than treating all printed lengths as drilling depth.

Which sizes are in the 100C and 102C sets?

100C has Ø5, 6, 8 and 10 mm at 160 mm overall. 102C has Ø5, 6 and 8 mm at 110 mm overall, plus Ø6, 8, 10 and 12 mm at 160 mm overall.

How should we compare an OEM two-cutter sample?

Use the same substrate, hammer, diameter and hole depth. Compare starting accuracy, completed-hole time, debris clearance, edge condition and finished-hole dimensions after a defined drilling interval.

Official Sources

References checked on 26 October 2026. Packaging imagery is retained in its original language; use the selected article number for the order.

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