Shimpo FG-M6PIN1 Grip Adapter (1mm max. pin grip). Shimpo Small Pin Grip 22 lb Capacity, M6 Thread, Accepts Samples to 1 mm Diameter. Suitable for gripping fine wires and filaments; three ranges for checking samples of 0.02", 0.04" and 0.08" (0.5, 1 and 2 mm) thick. Shimpo parts and accessories.