New Hobby Pro Alloy Clutch ShoesHobby Pro USA are proud to release their new alloy clutch shoes which are produced from high quality CNC alloy material which stays cooler, expands less under heat, lasts longer and provides a consistent clutch throughout long main events. Each HP Alloy Clutch Set comes with 6 clutch shoes, one set (3pc) 1.0mm clutch springs and one set of 1.1mm clutch springs.