Quantity8pcs Carbide Rotary Burr Set, 1/4 inch shank , fits most Rotary Die grinders DurableMade of heat-treated tungsten carbide that hardness can reach to HRC70, sharp and sturdy VersatileWidely used for metalwork, tool making, model engineering, wood carving, jewelry making,welding, chamfering, casting, deburring, grinding, cylinder head porting and sculpting TargetSuitable for all skill levels: this is a essential kit for woodworkers enthusiasts who cleans up welds or works with metal frequently, easy to grasp and use, safe and reliable ProtectiveShapes included : SA, SC, SD, SL,SF. Packed with a nice plastic case for safety storage and protection Made of heat-treated Solid tungsten carbide YG8 that lasts 8 times working life Durability than HSS tool Our Double Cut Carbide Burrs tend to be used on ferrous and non ferrous metals, aluminium, soft steel and also for all non-metal materials such as plastics and wood. They have more cutting edges and will remove material faster. Double cut will leave a smoother finish than single cut due to producing smaller chips. Use for medium-light stock removal, deburring, finishing and cleaning. A double cut carbide burr is the most popular cut and will see you through most applications. The product has excellent quality, long life and good cutting performance. It can process a variety of materials economically and efficiently to achieve the desired effect. Tips: Always ensure your burr shank is well inserted into your collet andclamped down tightly Wear an eye mask to protect your eyes from filings Ensure the appropriate Air Tool is used and that it is regularly maintained Check that the bur is running true in the Air Tool before use Generally, the minimum grip depth is 2 / 3 of the length of the handle (not suitable for long handle rotary files) Run extra long burs at slower speed, do not exceed 15,000 RPM Use a smooth cutting action with constant movement. Use light pressure, let the bur do the work Keep out reach of children Size: : 142mm*110mm*25mm Color: silver Products include: 1* tungsten steel grinding head