20 Pcs Diamond Grinding Bits 4Mm Cylinder Grinding Bit Rotary Diamond Burr Set For Most Rotary Tool Bit Grinder 6032604653096

Size: diameter: 4mm / 0.15inch; Shank diameter: 3mm / 0.11inch; Length: 45mm / 1.77inch Cylindrical tip, diamond-coated heads that can be mounted...