SMC MGP Z Series. Compact Guide Cylinder , MGPL12 40Z Impact Socket Set Long Bore Type Round Bore Diameter FD 320 F Bore Type Round Bore Diameter 80 mm Outside Diameter 170 mm Overall Width 39 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 30570 lbf Static Load Capacity 19400 lbf Precision Rating ISO Class 0 Seal Type None Finish Coating Uncoated Bearing Material High Carbon Chrome Steel Cage Material Steel Inner Ring Width 39 rod end male thread Auto switch Without auto switch Weight 89 g Specification values above are for model code CDQ2KB12 20DCMZ as published by SMC 12 MPa Max 8(Φ12 16)