150mm Countersink Bit Set 90° HSS, 8-Piece Rapidaptor Quick-Change - Wera Werkzeuge GmbH

Take advantage of the combination of precise cutting geometry, fast tool changes and ergonomic control for consistent countersinking results. The set delivers high-performance HSS cutters and a Rapidaptor quick-change system that together reduce downtime and improve hole quality — order the set directly via Metav Werkzeuge or ask the consultants for tailored advice.

WERA Countersink Bit Set 846/8 — 90° HSS countersink bits with Rapidaptor quick-change

WERA Countersink Bit Set 846/8 is a compact workshop set of high-performance HSS countersink bits designed for precise hole finishing in hand and machine operation

• HSS countersink bits, 90° cutting geometry
• Rapidaptor quick-change chuck system
• Kraftform multi-component handle included

Consistent, burr-free hole preparation for reliable assemblies

The set centres on HSS countersink cutters with a defined 90° geometry that produce reproducible chamfers and countersinks. This results in clean countersinks that improve screw seating and reduce post-processing. The nominal sizes cover a wide drilling spectrum, enabling appropriate pre-finishing for different screw heads and materials. By using high-speed steel cutters, the set maintains edge stability under normal workshop conditions and ensures consistent performance when both handheld tools and conventional cordless screwdrivers are used.

Faster workflow through rapid tool changes and ergonomic handling

Designed for efficiency, the kit includes the Rapidaptor quick-change chuck and a multi-component Kraftform handle, allowing rapid swapping between countersink bits and a secure, comfortable grip during manual use. The 6.3 mm (1/4") hex drive enables direct engagement with standard bit holders and conventional screwdrivers, while the additional universal holder provides a compact machine-ready option. Together, these features shorten set-up times and reduce interruptions, supporting a smoother production or repair workflow.

Robust versatility for everyday workshop and trade use

The configuration combines a non-magnetic universal bit holder with high-quality countersink cutters in a practical layout for the workshop. The assortment covers a range of diameters to match common fastener sizes and is suited for both hand-guided and machine-assisted countersinking tasks. Durability-focused design and standardised drive dimensions make the set a reliable companion for joinery, metal preparation and general finishing tasks where precise chamfering is required.

Contact Metav Werkzeuge today to request stock details or a specification checklist and ensure the WERA countersink solution matches the intended application

Technical data

• Article number: 4000829680NW
• Item name: WERA Countersink Bit Set 846/8 (90° HSS)
• Manufacturer: Wera Werkzeuge GmbH

Facts

• Cutting angle: 90°
• Drive: 6.3 mm (1/4") 6-sided hex
• Handle length: 119 mm
• Universal holder length: 50 mm (non-magnetic)
• Sizes: 6.3 mm, 8.3 mm, 10.4 mm, 12.4 mm, 16.5 mm, 20.5 mm

Special features

• HSS countersink bits
• 3-groove design
• Rapidaptor quick-change chuck
• Kraftform multi-component handle
• Universal bit holder (non-magnetic)
• Suitable for hand and conventional cordless screwdrivers

FAQ

What materials are suitable for countersinking with this set?
The WERA countersink bit set 846/8 is equipped with HSS cutters suitable for general countersinking tasks in typical workshop materials; selection of the correct cutter size ensures optimal results.

How does the Rapidaptor system speed up work processes?
Rapidaptor enables tool-free bit changes and secure retention of the 6.3 mm (1/4") hex bits, reducing downtime between operations and simplifying switchovers in mixed manual and machine workflows.

Is the universal holder magnetic and suitable for machine use?
The supplied universal holder is specified as non-magnetic and designed for reliable use with conventional cordless screwdrivers and suitable machine interfaces.

Manufacturer / Responsible: Wera Werkzeuge GmbH, Korzerter Strasse 43, 42349 Wuppertal