Gripper 4 Finger Parallel Internal Holding Force LBF @ 72 PSI 2.7 External Holding Force LBF @ 72 PSI 2.25 Open Width 37mm Closed Width 33mm Opening/Closing Stroke 4 mm Max Operating Frequency 120 cpm Operating Temp Range -10 to 60 C Maximum Pressure 87 PSI Port Size M3 x 0.5 Body Material Aluminum Finger Material Carbon Steel Length 35mm Width 30mm Height 30mm