Features: These carbide rotary cutter set, with 1/4 inch shank, and the grinding head diameter is based on 6-12mm, 0.25-0.47 inch, it is made of tungsten carbide. This rotary cutter set is perfect for woodworking, carving, engraving, sanding and polishing, which is a good assistant for your work. These rotary tool bits are made of premium tungsten carbide steel with high strength and durability that can allow you to use for a long time. Using these rotary cutter set with a rotary tool, it is 10 times higher than the file instructions. In most workplaces, it can replace the tail wheel without dust pollution. Include 8 types of different size grinding heads, you can choose the suitable one as your working needs. Specifications:Material: Tungsten SteelColor: SilverShank Diameter: 6mm/0.25 inchHead Diameter: 6mm/0.25in+7mm/0.28in+10mm/0.4in+12mm/0.47inPackage Size: 14*10.5*2cm/5.5*4.1*0.8inPackage Weight: 245g/8.6oz Package List:8*End MillsMany questions about Dropshipping services are following:1. How many orders can you handle per day? We are a large company in Shenzhen, China, with a large warehouse that can handle large orders every day. We ship countless packages every day. We can guarantee the order you request.2. How fast can you process orders? We will arrange the shipment as soon as possible after you pay for your order. Priority delivery for dropshipping order3. Can you ship an order without any receipts, invoices and promotional offer inside the package? Absolutely! No invoices, receipts, promotional offer if you leave notes on the order (if you want, we can deliver.)4. If you need other products? We can supply most of the products you need as much as possible1If you have any other questions, please feel free to . We are very grateful for your cooperation with you.5. We can support Dropshipping of CSV/Excel files.6. There is no limited inventory to fulfill orders on a daily basis