The two eyes on this micropulley work great for slack tending and attaching and streamlining your climbing system to your harness. Aluminum construction with a bushing mounted sheave for ropes up to 1/2”. Swiveling side plates are easy to use, even with one hand! MBS: 31kN (7,000 lbs); WLL: 6kN (1,400 lbs)MBS: 7,000lbs (31kN)