The eye to eye prusiks made from 50% aramid and 50% polyester results in a better heat and mechanical resistance. Widely used by arborists for self-locking hitch. 5163211 5163212 5163213 Diameter 5/16" | 8 mm 5/16" | 8 mm 5/16" | 8 mm Length 20" | 50 cm 24" | 60 cm 28" | 70 cm MBS 4044 lbs / 18 kN 4044 lbs / 18 kN 4044 lbs / 18 kN Standards EN566,EN795B,Meets ANSI Z133 5163221 5163222