Aerial Buddy® Fiber Optic Sheave, 24 in. Jameson’s Aerial Buddy® is designed to protect ADSS cable and other jacketed fiber during installation. Ideal for use with jacketed cables 2″ or less in diameter and loads that don’t exceed 1600 lbs. It’s constructed with lightweight, reinforced polymer that weighs significantly less than aluminum and steel models; reducing installation fatigue and permitting one-man set up.