Home Products list PV mounting systems Accessories RS02 Rubber spacer tube type RS02 RS02 Rubber spacer tube type which allows the roof fasteners to be attached to the roof in a waterproof manner Dimension: Ø20*17mmWeight: 0.0051kgs Packing: 50pcs/bag, 900pcs/box, 120,000pcs/612kgs/1.32cbm/pallet 1573265