Shimpo FG-M6FPG3 Grip Adapter. Shimpo Fine Point Grip 30 lb Capacity, M6 Thread, Accepts Samples to 3 mm Wide 1 mm Thick. Ideal for testing fine and medium gage wire, ribbon, tape and paper. Two jaw widths and load capacities are available; both can handle material thickness up to 0.04" (1 mm), Jaw widths are 0.12" (3 mm). Shimpo parts and accessories.