IG Step Ladder Multi Purpose Trestle DWM 40 Stroke_221^420mm Weight 560 g Specification values Engraving Pen Tip Weight 560 g Specification values above are for model code MHSL3 50D M9B as published by SMC Bore Type Round Bore Diameter 85 mm Outside Diameter 150 mm Overall Width 28 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 20680 lbf Static Load Capacity 14380 lbf Precision Rating ISO Class 0 Seal Type None Finish Coating Uncoated Bearing Material High Carbon Chrome Steel Cage Material Steel Inner Ring Width 28 so couriers bill it on volumetric weight (length × width × height ÷ 5000) which runs into the hundreds of kilograms