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Micro 100 FR-038-6X Full Radius Grooving Tool, AlTiN Coated, Solid Carbide Tool, 0.038/0.039' Groove Width, 0.100' Projection, 0.312' Minimum Bore Diameter, 0.375' Maximum Bore Depth, 0.3125' Shank Diameter, 2.5' Overall Length: Industrial & Scientific. Micro 100 FR-038-6X Full Radius Grooving Tool, AlTiN Coated, Solid Carbide Tool, 0.038/0.039" Groove Width, 0.100" Projection, 0.312" Minimum Bore Diameter, 0.375" Maximum Bore Depth, 0.3125" Shank Diameter, 2.5" Overall Length: Industrial & Scientific. The MICRO 100 FR-038-6X uncoated solid carbide full radius grooving tool. Designed and engineered for most machining applications that requires a full radius groove with a defined radii callout. Tools can be utilized for both roughing and finishing. Manufactured with close tolerances to ensure ultimate precision and performance. Tool's cutting edge/tip has a distinctive mirror like finish that significantly adds to material removal while improving surface finishes. MICRO 100 Solid Carbide Tools feature more than just a micro-grain of excellent quality. Their substrate is in a class of it's own resulting from exclusive treating procesess that allow for vastly increased speed and feed rates. For over 45 years, MICRO 100 is a known industry leader and internationally acclaimed when it comes to solid carbide tooling. 。 。 。