The park cwp 7 crank wrench puller is the perfect addition to any workshop the cwp 7 is a compact crank puller workshop tool with a built in 8mm hex for removing crank bolts includes two rotating tips 113 mm and 163 mm so it can be used to remove splined octalink and isis drive crank arms as well as square holed crank arms a must have multi fit crank puller for the home mechanic park tool cwp 7 crank wrench puller features weight 05 lbs built in 8mm hex for efficient re