Double extruded center tube provides load-bearing strength where it's needed the most while special footpiece utilizes durable rivets to secure the aluminum tubing from the inside, providing more stability than plastic connectors. Patented I-beam center post limits footpiece rotation to a 1.4 turn, always keeping the push-button in view and facilitating easy adjustment. Long, virtually unbreakable stair deflector helps protect against the crutch slipping on stairs and helps increase stress tolerance at all angles without cracking; non-skid rubber tips provide good traction. Built-in metal ring helps prevent excessive wear and ensures maximum durability. Crutches come packaged completely accessorized with no assembly required. 250 lb weight capacity.