Dave Fisher's head machinist, has created these limited edition, drilled out, Profile Mini Hubs. The Cats Eye Hubs have the same internals & hardware options as the Mini Hubs. Hand made in the USA! The Profile Mini cassette sets the benchmark for cassette hubs & was the first BMX cassette hub. Refined over the years the hub features a heat treated 6061 aluminium Shell which houses a heat treated Chromoly internal axle & precision sealed bearings. The hub uses the bullet proof Profile driver with 4 pawls & bearings for super smooth engagement & a loud click. section Product Specs HUB TYPE: Cassette AXLE: Male DRIVER: 9T DRIVE SIDE: Right Side Drive SPOKE HOLES: 36h WEIGHT: 371.9g (0.82lbs)