1. Material: high carbon steel2. Uses: used for surface grinding, wood grooving, etc., such as tea trays, root carvings, wood, etc.3. Note: not suitable for metal, glass, ceramic tiles and other items.4. Need to be used with angle grinder or electric drill5. High carbon steel forging, strong hardness, durable6. Weight: about 232 grams7. Size: diameter is about 7.5 cm, hole diameter is about 1.6 cm, height is about 2 cmSpecification: Package Weight One Package Weight 0.25kgs / 0.56lb One Package Size 12cm * 10cm * 2.5cm / 4.72inch * 3.94inch * 0.98inch Qty per Carton 118 Carton Weight 30.00kgs / 66.14lb Carton Size 58cm * 49cm * 12cm / 22.83inch * 19.29inch * 4.72inch Loading Container 20GP: 781 cartons * 118 pcs = 92158 pcs 40HQ: 1815 cartons * 118 pcs = 214170 pcs