uxcell 12 Pcs Buffing Polishing 3mm Shank 10mm Hard Cylindrical Felt Bobs Product Name : Felt Bob;Density : Hard Head Size : 10 x 18mm / 0.4" x 0.7" (D*L);Shank Diameter : 3mm / 0.1" Total Length : 46mm / 1.8";Material : Felt, Metal Color : White, Silver Tone;Weight : 39g Package Content : 12 x Felt Bobs