5 Pc 5/16" x 5/16" x 2-1/2" HSS Square Tool Bits Commonly used on a lathe, a milling machine fly cutter or a metal shaper High speed steel tool bits show exceptional results on mild steel, alloys and tools steels Overall Length: 2-1/2" long Weight: 0.8 Ounce Per Bit Overall Dimension: 5/16"H x 5/16"W x 2-1/2"L Quantity: 1 Set ( 5 Pc Per Order)