DIY Supplies:WoodworkingDescription:1. Material: stainless steel post + rubber wheel2. Size: rubber wheel diameter 12.7/6.35MM optional, stem shank diameter 3.15/2.3MM optional3. Features: cross-section screw, uniform force; stainless steel material, high hardness, not easy to rust; a variety of specifications, to meet different operational needs.4. Function: sanding tool for connecting sandpaper ring5. Installation method: put the sandpaper ring on the rubber pole and gently rotate the screw with a screwdriver to expand the rubber piece so that the sandpaper ring can be fixed on the pole.Specification: Package Weight One Package Weight 0.08kgs / 0.19lb One Package Size 10cm * 10cm * 8cm / 3.94inch * 3.94inch * 3.15inch Qty per Carton 356 Carton Weight 30.00kgs / 66.14lb Carton Size 50cm * 50cm * 60cm / 19.69inch * 19.69inch * 23.62inch Loading Container 20GP: 177 cartons * 356 pcs = 63012 pcs40HQ: 412 cartons * 356 pcs = 146672 pcs