... -flute design allows for higher feed rates.Center CuttingMaterial: M42 8% CobaltPacking: Wooden caseM42 Single end mill set detail:PiecesFluteDescriptionOrder No ... /4by 16ths723-0002102&41 each of 1/4,3/8,1/2,5/8,3/4723-0003M42 Double End Mill Set detail ... 3/4by 16ths723-9002102&41 each of 1/4,3/8,1/2,5/8,3/4723-9003 M42 8% Cobalt End Mill Sets