MARK V LABORATORY offers a complete line of replacement Micro Hardness Diamond Indentors for most Brands of Testers. High Tolerance Vickers & Knoop Indentors are avalible for ATS, Buehler, Clark, Leco, Leitz, Mitutoyo, Shimadzu and Zwick machines.For the best Quality & Price on Micro Hardness Penetrators & Test Blocks, choose MH-VD & MH-KD Diamond Indentors from Mark V Lab.