Description: Reliable Material: Snowboard Gummy Stone is made from rubber material, can effectively removes rust and burrs Fine to Coarse Optinal: The 60 grits soft red rubber abrasive stone is suitable for removing rust and burrs; 120 Grit medium gray rubber abrasive stone is ideal polishing light to medium edges clean up and light polishing; 150 Grit hard blue rubber abrasive stone is good for removing micro-burrs on the surface. Small Size: The Snowboard Gummy Stone sizes are 5x4x2 cm, lightweight and portable, easy carry and store Package Includes: 1 piece snowboard ski stone(Optional: 60 grits or 120 grit, or 150 grit), choose according to your need Versatile Use: Besides being great snowboard tuning tool for ski board maintenance, this Rubber Grinding Block can also be used for handcrafts or other items requiring delicate sanding or polishing tasks Specification: Material: Rubber Size Chart:60 Grits Soft Red Rubber Abrasive Stone: 5cmx4cmx2cm/1.97 inchx1.57 inchx0.79 inch Package Includes: 1 Piece Rubber Gummy Grinding Stone (As you choose) Note: Please allow slightly errors 1-2cm differences due to manual measurement.