A high-strength, multifunctional pulley featuring a large sheave for high efficiency. TheNaiad Pro is ideal for high load haul systems and complex operations. It uses the samedesign as the Naiad with a main attachment hole that accommodates three carabiners,two secondary holes on the sides for positioning and a large lower becket hole, butfeatures sealed ball bearings for higher efficiency and intensive use at higher speeds.Prusik knots can be installed on either side (aramid cord suggested).