This 21 foot Over Center Buckle Strap with Double Stud Fittings on both ends is a great tie down strap to use in combination with airline track. The double stud fittings easily lock into the chosen airline track slots, creating strong and durable anchor points. The main benefit of the Over Center Buckle is it locks the strap into place and is quick and easy to use. Simply feed the loose end of the strap through the buckle and pull the lever closed. The strap will remain tight and secured and you won't need to worry about it coming loose. The Over Center Buckle Strap is made of 12,000 lb industrial grade webbing for superior tie down strength.