S137 30° Extra Long Square End Mill, 5/16" Dia., 4" L, 4 Flutes, 5/16" Shank, Carbide Rotary Tool Parts & Accessories Outside is graduated along both

Outside is graduated along both edges to 1/16ths of an inch

This 50-count case offers great value and reliable performance

Slotted oil adjustment screw under filter cap

Kit contains 40 pieces: A through Z

Temperature and Current Protection

S137 30° Extra Long Square End Mill, 5/16" Dia., 4" L, 4 Flutes, 5/16" Shank, Carbide Rotary Tool Parts & Accessories Outside is graduated along bothBright finish improves chip flow in soft or non ferrous materials Recyclable packaging Specifications Material Carbide Mill Diameter 5 16" Depth Of Cut 1 5 8" No. Of Flutes 4 Overall Length 4" Shank Size 5 16" Country Of Origin United States