Park Tool Hex Precision Driver 2.5MM DHD-25 drumbeat21-303 we designed a range of

we designed a range of bottle cages including an integrated room to house an 8 bit multi tool and chain tool making sure you get back on the bike in no time

- Wahoo inserts available

Safe to use on most metal

We created the Compound for riders in search of the renowned Giro fit and in need of an extra-large size

About Blackburn

Park Tool Hex Precision Driver 2.5MM DHD-25 drumbeat21-303 we designed a range ofProfessional quality component hex driver precisely machined to exact standards to ensure a perfect fit on compatible component fasteners. Featuring an ergonomic, CNC machined, perfectly balanced 6061 aluminum handle hard anodized to take the rigors of everyday use. About Park Tool Park Tool are the world's largest bicycle tool manufacturer. Located in St. Paul Minnesota they have been designing and manufacturing bicycle specific tools since 1963.