Double extruded center tube provides load-bearing strength where it's needed the most.Footpiece utilizes durable rivets to secure the aluminum tubing from the inside, providing more stability than plastic connectors.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 crutchslipping 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.300-lb. Weight capacity. 1 pair.