RilexAwhile Mandrel Mounted White Conical Felt Buffing Point Bob Polishing Grinder for Dremel Rotary Tools Product Name: Mounted Felt Bob. Material: Felt, Metal. Color: White, Silver Tone. Felt Size: 10 x 14mm / 0.35" x 0.55" (D*L); Shank Diameter: 3mm / 0.078" . Total Length: 47mm / 1.85". Weight: 22g Suitable for polishing and buffing , soft metal, wood, plastic, etc. Can be used with electric drills, electric grinders or other rotary tools. Package Content: 12 x Felt Bob