Carving Expert 9pcs Abrasive Mounted Stone For Dremel Rotary Tools Grinding Stone Wheel Head Dremel Accessories 1/8 Inch Shank Column-shape * 3,Bullet-shape * 3, T-shape * 3. Shank diameter: 3.0 mm Fits most normal rotary tools for sanding, grinding, polishing, sharpening, deburring Suit for polishing and grinding of metallic or non-metallic products Material : Stone, Metal; Package included: 9 * polishing tool