Bolt width = 4mm
Bolt length = 52.5mm
This 52.5mm Countersunk Bolt is the exact size fit for connecting the Disk brakes to Superstar Wheels. It is made from A4 Marine Grade Stainless steel & will never rust on you!
The Bolt has been Countersunk for flush neat fit into the disk - no protruding parts. Use a 3mm Allen Key to locate the Bolt into the nut & use a 7mm spanner to tighten the M4 Nuts onto the Bolts. Always try to tighten the nut onto the bolt & NOT the bolt into the nut & always ensure all nuts & bolts are tight before riding...!