This is a combo kit: Includes Crank Puller/Installer Tool AND Crankcase Splitter/Separator Tool. - Crankcase Splitter/Separator Tool This is a must tool for disassembling vertically split 2 and 4-stroke crankcases. Makes crankcase disassembly easy by safely pushing the crank assembly out of the case halves. Adjustable arms allow it to be used on a variety of bolt patterns. Includes both 6mm and 8mm mounting bolts. Heavy-duty steel construction. The C-clip adapter (part # 1329270001) is required for cranks that use a C-clip to hold the primary gear on (common on many Kawasaki models). Will not work on: Yamaha Raptor 660, Kawasaki Tecate 250, KTM 125/144/150