DMM Ultra O Locksafe carabiner poles Rope diameter range (mm) 11

Rope diameter range (mm)    11 - 13mm (7/16 - 1/2")

This opening sequence helps to reduce the risk of unintentional opening of the gate

comfortable performance

useful when organising gear on a harness

Oval shape - Unique in its category

DMM Ultra O Locksafe carabiner poles Rope diameter range (mm) 11The Ultra O Screwgate could be described as the perfect aid climbing biner it certainly performs remarkably well in the big wall environment and the I Beam construction gives it an excellent strength to weight ratio. Perhaps multi day ascents, sac hauling, portaledges and extreme dehydration (eek!) are not your bag, but that doesnt mean you should turn your back on the oval biner design, far from it. At some point all of us will need to use a pulley