• Essential tool for removing and installing piston pins without damaging the piston. • Knurled aluminum handle provides a firm and comfortable grip. • Includes interchangeable adaptors. • Suitable for piston sizes from 40 to 100mm (1-5/8" to 4") with pin sizes from 12 to 25mm (1/2" to 1"). • Applications included all single-cylinder engines from 50cc to 600cc, and all 2, 3, and 4-cylinder models.