NIDEC-SHIMPO’s Flat Chuck Tensile Grip attachments possess a 0.79” (20 mm) square, serrated gripping face that can accept samples up to 0.75” (19 mm) thick.
FG-M6FTG20U - Flat Tensile Grip, M6 Thread, 100 lb (50 kg) Capacity
FG-FTG20B - Flat Tensile Grip, 100 lb (50 kg) Capacity