Woodworking Aluminium Profile Fence With T-track Sliding Brackets Tools For Wood Work Router Table Saw Table DIY Workbenches. Name: Woodworking table backing Backing size: 5006860MM Standard opening: 40MM Inner diameter of vacuum port: 32MM Center distance of chute: 330MM Chute size: 3003012.7MM Weight: 3KG. Cushion total length 500mm, total width 68mm, total height 60mm (not including the height of the dust blocking plate nut 40mm), standard with an opening of 40mm (opening can be closed), dust suction interface diameter 32mm, the center of the two grooves distance 330mm, the length of the two grooves 300mm, the width of the grooves 30mmm, the thickness of 12.7mm.