OTC Tools OTC 4528 Stinger 17 Piece Clutch Alignment Tool Set. Essential for clutch installation on virtually all cars and light-duty trucks. Aligns clutch plate properly by using tapered cones and pilot adapters. Includes seven fractional pilot adapters, one clutch disc centering adapter and one alignment shaft. Includes five metric pilot adapters, two clutch disc centering adapters and one alignment shaft. Housed in a blow-molded storage case.