Wera 851/1 BDC SB Phillips PH 1 x 25 mm Impact Bit, 1/4 inch Hex Drive, Diamond Coated 05073332001

The Wera 851/1 BDC SB bit stands out with its BiTorsion Diamond Coating, which provides an exceptionally secure fit in the screw head and significantly reduces the risk of cam-out. The diamond particles on the tip bite into the fastener, ensuring reliable torque transfer even in demanding applications. This single bit features a Phillips PH 1 tip, a 1/4" hexagonal shank, and a length of 25 mm, making it compatible with standard bit holders and power tools.

Highlights

• BiTorsion Diamond Coating for enhanced grip and reduced cam-out
• BiTorsion zone absorbs peak loads, extending bit life
• High-alloy steel construction for durability
• Impact rated for use with power tools
• Self-service packaging (SB) for easy retail display

In daily use

Whether working with an impact driver or a manual bit holder, this bit delivers consistent performance. The diamond coating ensures the bit stays engaged with the screw, reducing slipping and damage to the fastener. The BiTorsion zone flexes under high torque, protecting the bit from breakage. Its 25 mm length offers a good balance between reach and control, making it suitable for a wide range of assembly and repair tasks.

Full specifications

• Bit type: Phillips
• Tip size: PH 1
• Shank type: Hexagonal
• Shank size: 1/4 inch (6.35 mm)
• Bit length: 25 mm
• Material: High-alloy steel
• Coating: BiTorsion Diamond Coating (BDC)
• Quantity per pack: 1 piece
• Packaging type: Self-Service (SB)
• Impact rated: Yes

Final note

A professional-grade bit that combines diamond coating and BiTorsion technology for superior performance and longevity.