With this staggering fact in mind, DMM has abandoned convention, thrown away the rule book and approached the energy issue from a completely new angle knowing that weight is the enemy of the climber. The weight of a rope and friction that occurs in use make it the crucial issue. We believe we have redefined the carabiner by introducing the concept of a rolling component in the safety chain.Designed for use at rope clipping end of a quickdraw, this extremely light and strong biner works mechanically in your favor. What more can you ask?.Meets CE standard EN 12275 for carabiners as well as EN 12278 for pulleys..Weight 1.5oz (44g)..