Having a crankcase splitter and puller is a necessity for disassembling most 2 and 4-stroke crankcases. Made from heavy-duty steel construction, featuring adjustable arms and 8 mm and 6 mm mounting bolts, it makes splitting the crankcase easy. Safely split the cases on your vertically split 2 and 4-stroke engines. Both 8 mm and 6 mm mounting bolts included. Made from heavy-duty steel. 360-degree adjustable arms to be used on a variety of bolt patterns.