Description ITEM# : 8R-73 Figure 8 Rope Descender/ Rappel Ring Material: Aluminum Belay Device Safety Working Loading (SWL) Strength:3000kgf Weight:108 g Inner diameter: Big:48mm & Small:24mm Width: 73 mm Length: 140 mm Finish: ANODIZED =================== ITEM# : 8R-170 Shape: Figure 8/Belay Device Material: Aluminum Belay Device Safety Working Loading (SWL) Strength:40kN Weight:254 g Inner diameter: Big:71mm & Small:40mm Width: 170 mm Length: 170 mm Thickness:14mm