ANGLE GRINDER COLLET ADAPTER No Air Compressor, No Die Grinder, No Problem! Use Die Grinder Tooling With Your Angle Grinder. CNC Machined, Heat Treated, and Black Oxide Plated To Last A Lifetime. Made With Pride In The USA. BEWARE OF CHEAP HEX DESIGNS THAT CAN DAMAGE SOFT WORK PIECES. Plumbers & Electricians, Use A Cutoff Wheel And Cartridge Sanding Roll On Conduit & Tubing. SHIPS USPS PRIORITY TWO DAY DELIVERY, US PATENT No. 7,717,771