Eyolf Prusik Product A Suitable for applications when workers 240 002 Suitable for applications when workers are anchored lower than the elevation of the dorsal d ring on their full body harness and or the extracted lifeline can bear against an edge or surface during fall arrest Carabiner holes in all four corners allow the Ultra Pro to be tied off for safety or linked together for extended protection Note: Perform your own test using Prusik knots on your rope and keep track of outside influences as they might influence the effect of the Prusik knot Made from 8mm Prusik cord with a programmed stitch pattern and using a sigma 3 calculation we get a comfortable MBS of 19 kN when tested straight as a loop