Cratex Rubberized Abrasive Amazon Exclusive Z086 Engine Turning Intro Kit #Z086 CONTAINS 8 pieces of 2 inch. Length and ½ inch diameter sticks with all 4 grit textures (Course, Medium, Fine and Extra Fine). Ready to use for engine turning and jeweling on metal. Able to produce circular, overlay and fish scale patterns. The tools are made with industrial strength Silicon Carbide.