Bench Dog Clamp Quick Hold Down Table Clamp Adjustable Desktop Quick Acting Bench Dog Clamp for Woodworking Tool Workbench Accessories Color: Green Material: Aluminum Alloy Quantity: 1pc/2pcs(optional) Column Diameter: 19mm/20mm(optional) Clamping Thickness: Max. 60mm/ 2.4in Item Size: 154 * 99mm/ 6.1 * 3.9in Package Size: 1pc: 220 * 160 * 60mm/ 8.7 * 6.3 * 2.4in                         2pcs: 220 * 160 * 120mm/ 8.7 * 6.3 * 4.7in Package Weight: 19mm(1pc): 175g/ 6.2oz                               19mm(2pcs): 350g/ 12.3oz                                20mm(1pc): 182g/ 6.4oz                                20mm(2pcs): 364g/ 12.8oz