Buy direct from THINBIT. MINI GROOVE 'N TURN 3 Pack MGTI070D5LC 'M' Series, TiN Coated carbide, Grooving insert. .070" wide, Sharp Corner, 0 radius, .105" depth of cut. DURA-MAX 5000 carbide is a hard, abrasion resistant, sub-micron grain carbide with excellent edge and corner retention. This grade is recommended for cutting abrasive materials without an interrupted cut. TiN is an excellent general purpose PVD coating for cutting most materials. TiN provides excellent wear resistance and allows increased cutting rates. TiN increases lubricity at the cutting edge which reduces galling and welding. Kaiser Tool Company, Inc. makes all products in Fort Wayne, Indiana and has over 50 years producing THINBIT products. Our principles are Quality Products, Fast Delivery and Superior Customer Service. Please Note: Final shipping costs will be calculated at checkout based on value of all THINBIT items ordered. THINBIT, MINI GROOVE 'N TURN and DURA-MAX are registered trademarks exclusively licensed to Kaiser Tool Company, Inc. in the U.S. and/or other countries.