uxcell 16mm Cylinder Head 3mm Shank Grinding Polishing Mounted Points 10 Pcs Head Size: 16 x 22mm / 0.63" x 0.9" (D*L); Shank Size: Diameter: 3mm/ 0.12" Product Name: Mounted Point; Main Material: Felt, Metal Weight: 42g; Package Content: 10 x Mounted Points Head Shape: Cylinder; Main Color: Off White, Silver Tone Total Length: 49mm/ 1.9"