Heat treated alloy tool, one inch base fits wrench or bench vise. Thin wall construction allows use without removal of cones and locknuts.
– Fits Atom, regina, splined Zeues, and some Schwinn-approved freewheels
– The FR-4 has 20 splines and is approximately 21.6mm in diameter
– Always use a skewer or axle nut to hold remover firmly in place