C.A.M.P.'s Naiad Pro is a high strength, multi functional pulley featuring a large sheave for high efficiency. The Naiad Pro is ideal for high load haul systems and complex operations. It uses the same design 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, but features sealed ball bearings for higher efficiency and intensive use at higher speeds. Prusik knots can be installed on either side aramid cord suggested.