This is an effective clip for sheet materials with or without a hem, including boat covers, vinyl signs, thin metals or even torn tarps.
Instead of clamping jaws, the clamping force comes from a pair of spring-loaded knurled aluminum rollers that wedge against material inserted into the clip.
It securely grips material up to 3/16". The swivelling eyelet provides a mounting point for ropes or bungees. Made from polycarbonate and reinforced nylon, it has 45 lb of holding capacity.
Made in the USA, it is versatile, tough, and simple to use. Sold individually.