Brand COOCHEER Main Material Steel Types Tungsten Steel Grinding Head Feature High quality, long durability, factory direct sales Package Normal by pp bag and carton, or as customer's requirement Usage For Dremel rotary tools, metal drilling and polishing Delivery time 5#8 days after confirmation and receipt of deposit Material: This carbide cutter set is made of high quality materials. Made of high quality tungsten carbide steel, which has a long service life. Stem diameter: 3 mm; cutting diameter: 6 mm; Please check the size before purchasing. Used on wood, iron, carbon steel, alloy steel, stainless steel, copper, aluminum and other metals. Also, marble, jade, bone, etc. Multi-use: grid 1/8" shank compatible with most rotary tools. This rotary cutter set contains everything you need for drilling, engraving, sanding, polishing and removing sharp edges. Ideal choice for woodworking, carving, engraving and polishing, chamfering, grooving, grooving, grooving, chamfering. Excellent build