SMC CY3B Series Magnet Type Rodless Cylinder, CY3B20 100 Abrasive Paper Cloth Backing 000 mm Outside Diameter 170 000 mm Outside Diameter 170 Specification item model symbol Specification information built in magnet D built in magnet installation support B Through hole (standard) tube inner diameter 20 tube inner diameter 20mm Types of port screws Rc M screw cylinder stroke 25 cylinder stroke 25mm dual stroke mark No dual stroke mark cylinder stroke 2 Cylinder stroke 2 None body options M rod end male thread Auto switch mounting groove Z ø12 ø25 2 sides ø32 ø63 4 sides auto switch Without auto switch Auto switch additional symbol 2 with or without Custom made specifications standard