The tungsten carbide hole saw is a great alternative to the traditional bi-metal hole saw. It cuts faster, cleaner and lasts longer. Try Hole Knife, you'll love it<br> Metal drill bits Tungsten blades cut through steel plate, iron, aluminium, copper, cast iron and especially stainless steel and other hard alloys.<br> ><br> Metal Drill Spring-loaded pilot tip ejects cuttings to save time. The cutter body then cuts a clean, burr-free hole faster than conventional twist drills or hole saws.<br> Cutters are the standard for electrical construction, passage work and general metal fabrication. The spring on the pilot drill ejects the slug.<br> Drilling With normal maintenance, the tool life is much longer than other hole cutting tools. Inexpensive sharpening allows for repeated use.<br> 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-DIMEANI official store