... elongation rate Advantage:step-by-step release; controlled release reduce the risk of accidents; ideal for cars, truck, snowmobiles, ... 25mm, 40mm, 50mm, 75mm, 100mm; Safety factor: 2:1. The end hooks could be S hooks, J hooks, D rings ... , Delta ring, Flat hooks etc. The benefit of using ratchet lashing is efficient, save time, easy ... so on. 4" Ratchet Tie Down, Tie Down made in China