The park tool fr 2 freewheel remover is made from heat treated alloy tool steel one inch base fits wrench or bench vise thin wall construction allows use without removal of cones and locknuts park tool fr 2 freewheel remover features fits older sun tourreg two notch freewheels two notches are approximately 25mm across measured outside to outside always use a skewer or axle nut to hold remover firmly in place