Blackburn Track Block 3 - Black Size:NONE - Rails compatibility Compatible from

- Rails compatibility Compatible from 7x7mm up to 7x10mm rails

- Set your own digit combination in a few easy steps

The wide lie-flat bib straps are positioned for maximum comfort

- 8mm Hex: With hollow core that will accept loose hex keys to provide additional leverage

with a unique four-sided wrench design for extra strength and support to help prevent slipping and deformation of nipples

Blackburn Track Block 3 - Black Size:NONE - Rails compatibility Compatible fromTRAKBLOCK 3 FRONT WHEEL PLATFORM Get level, and stabilize with the Trakblok 3. DETAILS Stable front wheel stand Slots for 700c, 650c and 26 inch wheels Use with Trakstand Mag 3 to level bike Use with other trainers to raise handelbars