0.0001,-. These regular length miniature end mills feature a length of cut three times the cutting diameter of the tool.Premium Sub-Micrograin Solid Carbide End Mill4 FluteBall EndSingle End 30° Helix1/8" Shank x 1-1/2" Overall LengthRegular Length - Length of Cut = 3X's DiameterCenter Cutting Carbide EndmillView Carbide End Mill Speeds & FeedsCarbide End Mill TolerancesSize RangeDiameterShankAll Sizes+.