3M 01990 Green Corps 3" x 1/16" x 3/8" Cut-Off Wheel (5 Wheels Included) Performance cut-off wheel Cutting sheet metal and miscellaneous parts DO NOT USE TOOLS WITHOUT GUARDS. Rigid, reinforced resin-bonded wheel provides excellent durability Versatile wheel is suitable for cutting a wide variety of materials Tough aluminum oxide grains cut fast to enhance productivity Easy attachmentto the appropriate cut-off toolwith hub and retainer nut providing a simple and quick replacement of worn discs Wheel must have a maximum operating speed greater than or equal to the maximum speed of the power tool used MUST BE USED WITH ANSI-APPROVED FLANGES FOR TYPE 1 CUT-OFF WHEELS AND A WHEEL GUARD THAT FITS THE SIZE OF THE CUT-OFF WHEEL