ITEM NAME:5/16" x 5/16" Straight Shank 4 Flute Endmill Milling Cutter R3N9 5/16" x 5/16" Straight Shank 4 Flute Endmill Milling Cutter R3N9 4 Flute, HSS Material, Straight Shank, Helical Groove Used widely in the milling machines or machine tools for milling the steps, recesses, vertical plane surfaces, etc. Product Name : End Mill Material : HSS Spec. : 4 Flute Cutting Diameter : 8mm/ 5/16" Cutting Depth : 22mm/ 7/8" Shank Diameter : 8mm/ 5/16" Total Length : 65mm/2.56" Color : Silver Weight : 27g Package Content : 1 x Straight Shank End Mill Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/-1-3 cm..4 Flute, HSS Material, Straight Shank, Helical Groove. Total Length : 65mm/2.56". Material : HSS.