Wera Tools 851/4 BTH PH Extra Tough Bit
BiTorsion bits for Phillips screws with Torsion zone where kinetic energy is diverted from peak loads. This greatly extends the product service life; 1/4" hexagon, suitable for holders as per DIN ISO 1173-F 6.3.

Wera Tools 851/4 BTH PH Extra Tough Bit
Title: 851/4 BTH PH2/50 Extra Hard BiTorsion Bit
Workshop-backed adviceHelp from people who work on bikes every day.
Compatibility helpAsk us to check the fit before you order.
Secure checkoutSimple and protected online ordering.
UK supportFriendly support from our Gloucestershire shop.
Product guide
Everything you need to know.
Clear product information, specifications and practical details to help you buy with confidence.
Ask about this productWera Tools 851/4 BTH PH Extra Tough Bit
BiTorsion bits for Phillips screws with Torsion zone where kinetic energy is diverted from peak loads. This greatly extends the product service life; 1/4" hexagon, suitable for holders as per DIN ISO 1173-F 6.3.
Need a compatibility check?
Send us your bike details before ordering.
Message us with a photo of your bike and what you want to achieve. We will help you check fit and compatibility.




