The Arsenal 5305 Extension Ladder Shoulder Lifting Strap is designed for easier and safer transport of heavy extension ladders. This shoulder strap installs seamlessly onto extension ladders to distribute weight evenly and reduces strain on back and arms when transporting. This shoulder strap is compatible with extension ladders with hollow step rungs and will not work with a-frame, straight or combination/multipurpose ladders. To hold up to the weight of ladders up to 100lbs // 45kg,