CMI ULTRASCENDER CMI For rugged use and exceptional strength, the CMI Ultrascenders are the obvious choice. These are the strongest ascenders on the market. The large model features a molded handgrip for extra comfort, while both share simple one-handed operation on and off the rope. Combining extruded and machined bodies with stainless steel parts produces a bomber ascender for any usage. Sold in pairs. * Large Width: 7.6 cm, Length: 18.7cm, Weight: 270g. * Large Breaking Strength: 5,000+ lbs * Small Width: 7.6cm, Length: 13cm, Weight: 180g. * Small Breaking Strength: 4,000+ lbs