Little Beaver Change Over Kit CCO 5# 5 HP 3 by 4 Inch Bore Clutch Fiber Shoes Drum (Earth Drill Mechanical Power Drive Replacement Part) Hammer Drills The 12 point socket profile incorporates The 12 point socket profile incorporates off corner loading geometry that applies turning force directly to fastener flats it equips commercial concrete contractors with maximum floor flatness Friction Resistant Fiber Shoes: High density composite fiber shoe linings provide positive centrifugal lockup while reducing thermal wear Balanced Steel Clutch Drum: Machined steel outer drum housing engineered to absorb engagement friction and distribute rotational torque evenly