'On the fly' BPC (bite point control) and Reach adjustment

Pros: Threaded engagement means little chance of leakage

Materials: The body and lever are both made from high-quality aluminium

The sealant has a very low viscosity that enables it to spread itself over the whole inside of the tyre wall

The Top guide

Topeak T Handle Allen Key Set - 2-2.5-3-4-5-6 Virtual Parent 'On the fly' BPC (biteThese are a professional quality set of Allen Keys with an ergonomic T handle from Topeak. The T handle allows you to get greater leverage and offers better control over your conventional Allen key design. The 4, 5 and 6mm Allen keys have a ball head for angled use on those difficult to reach bolts. Who's this item for: Perfect for the at home or professional mechanic. What does it include: Includes 6 Allen keys: 2, 2. 5, 3, 4, 5, and 6 mm. Materials: