The prusik loops made from 50% aramid and 50% polyester results in a better heat and mechanical resistance. Suited for wide purpose for arborists. 5163111 5163112 5163113 5163114 Diameter 5/16" | 8 mm 5/16" | 8 mm 5/16" | 8 mm 5/16" | 8 mm Length 28" | 70 cm 32" | 80 cm 36" | 90 cm 40" | 100 cm MBS 5617 lbs / 25 kN 5617 lbs / 25 kN 5617 lbs / 25 kN 5617 lbs / 25 kN Standards EN5