For:aluminum alloy, copper alloy, magneslum alloy, Features:second-edged or three-edged is for your choice, the cutter is speciffically designed for high-speed cutting of aluminum, copper and gold etc.With excellent finish, Specification: Shkcedcelovl 41350 41.54.550 42650 42.5750 43850 441150 651350 661550 771860 882060 992375 10102575 11112875 12123075 161640100 202040100