The FR-8 is designed to fit the four-notch tool fittings found on flip-flop BMX hubs with M30 x 1 threads, including models made by ACS®. Constructed from heat-treated alloy tool steel, the FR-8 features a 1" tool fitting for use with an adjustable wrench, socket, or bench vise.
Fits four-notch tool fittings with an approximate inner diameter of 25 mm and approximate outer diameter of 32 mm
Fits freewheels on flip-flop BMX hubs with M30 x 1 threads
