Sandvik Coromant Milling Cutter, Multi-Purpose Adjustable Half Side and Back Face Disc, Series: CoroMill® 331, 4 in Diameter Cutting, 1.04331 in Maximum Depth of Cut, 8 Inserts, Insert Compatibility: N/L331.1A-08RE0.20-1.54, Bore with Keyway Shank, 1-1/4 in Arbor Hole, Left Hand Cutting Direction, 90 deg Cutting Angle, ANSI Code: L331.52C-101T32FM, ISO Code: L331.52C-101T32FM, Yes Through Coolant