SMC MHZ2 Series Air Gripper, Parallel Opening, Closing Linear Guide Parallel Type, MHZ2 20DN1 Chisel Set Small 3 finger grippers adds a center 3 finger grippers adds a center through hole to accommodate a push actuator to ensure proper release of work pieces Specification item model symbol Specification information With auto switch D With auto switch Mounting support type E Boss attached on both sides tube inner diameter 16 tube inner diameter 16mm cylinder stroke 15 cylinder stroke 15mm dual stroke mark No dual stroke mark cylinder stroke 2 Cylinder stroke 2 None Cylinder additional symbol A air cushion Port location on head cover 90° about axis rocking support bracket no metal fittings rod end bracket no metal fittings auto switch Without auto switch Auto switch additional symbol 2 with or without Auto switch mounting type B band attached Custom made specifications standard