ROK straps are adjustable, versatile and easy to fit around most cargo and luggage items. Simply attach both ends of the straps, connect and tighten down over your load and youre off! Strongest Hold. Quality materials and good mechanical connections ensure these are the strongest stretch straps you will use. The straps are UV protected so the solid core rubber is guaranteed not to rot. Each strap safely holds 100 lbs (45kg) of cargo securely. Secure anything without scratches no hooks. Loops on both ends can be secured to just about anything, and the mid-strap buckle allows you to adjust the strap to your needs. Each pack includes two straps.