The Dualcender was designed for use in the secured footlock technique in doubled rope technique (DdRT). Compared to using a prusik, the Dualcender requires very little effort to advance between strides. The compact size (compared to handled ascenders) is convenient for storage during work. The Dualcender’s “toothless” design does not pick or otherwise abrade lines. Slips on rope at 4.5 kN (1,000 lbs).