BikeService Piston Pin Removal And Installation Tool BS30018Essential 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.