SMC CQ2W Z Series Compact Cylinder. Double Acting , Double Rod, CQ2WB25 50DM Magnetizer £Internal design Size:PS 4009Q(=NS 4012A) £Internal design Bore Type Round Bore Diameter 45 mm Outside Diameter 58 mm Overall Width 7 mm Closure Type Double Shielded Row Type & Fill Slot Single Row Non Fill Slot Snap Ring Included Without Snap Ring Internal Clearance CN Operating Temperature Range 40 to 250 ºF Cage Type Pressed Dynamic Load Capacity 1330 lbf Static Load Capacity 1110 lbf Precision Rating ISO Class 0 Seal Type None Finish Coating Uncoated Bearing Material High Carbon Chrome Steel Cage Material Steel Inner Ring Width 7 sourced through Korean distribution and shipped from Korea by FedEx International Priority with export packing and commercial documents There is no protruding auto switch