Equipped with different of grinding bits, this set is practical and multipurpose, and it also can devote itself to refurbishment and sanding.Carefully selected material enables these grinding bits to have excellent abrasion resistance, good sharpness, uniform particles and no dust pollution, which are safe to use.These grinding bits are made of rubber, and their shanks are made of stainless steel.The length of this set is 4.5cm, the width and height of it are both 1.2cm.This set is suitable for grinding works of jade, wood, metals, etc.Item Name: Polishing Rubber Grinding BitsMaterial: Stainless Steel,RubberShank Type: Round Shank Cylindrical, Conic (Bit Shape); 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mmSize Details: Shank Diameter: 3mm/0.12" (Approx.)Shank Length: 30mm/1.18" (Approx.)Length: 45mm/1.77" (Approx.)Head Length: 15mm/0.55" (Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.Package Includes:7 x Grinding Bits (3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store