Mastel Precision (Mastel) is a medical device company, engaged in the design, manufacture and marketing of medical devices for the healthcare market. The company`s products are sold under the brand names, Ahmed SuperPentiahm, Stegmann Katana, Stegmann MicroCrescent, Template, Keratoscope, PHDII, Gimbel SuperStealth and Fine Triamond. It develops surgical instruments which are useful for diagnosis and treatment during optical surgeries. Its product portfolio includes ASSORT, VectTrak, Nichamin System, The Olson system, C-Procedure Instruments, Diamond Scalpels, pachymetry solution, Toric Instruments, Main Incision, Paracentesis, DSAEK, Ahmed Diamonds, Stegmann Diamonds and Fixation Rings. The company also offers diamond repair services. Mastel is headquartered in South Dakota, the US.