IJO1458 Features: * 2-stone hone fits cylinders 11/16" to 2-1/2" (7.4 - 63.5mm) * Square ends of stones hone to the end in step-cut and blind-end cylinders * 240 grit stones are 1-1/8" long * Flexible driver * Skin-packedControlled pressure makes it possible to polish or hone with just one stone grit on the 2 Leg 11/16" to 2 1/2" hone. * 2 Leg 11/16"" to 2-1/2"" Brake Cylinder Hone Warranty: * Lifetime warranty does not cover abuse