[Non-]---The screw-in tent fastener is designed with an adjustable spiral thumb screw that tightens the jaws to provide a strong grip for your tarp. Perfect for securing shade sails, pop-up tents, or tarps. [Powerful Load Capacity]--By connecting each corner of your tarp or tent, it provides a secure and stable structure even in the strongest winds, increasing the load capacity up to 33 lbs. [Special Mouth Design]---This awning clamp features a unique tooth design that makes the teeth more stable. And our lock handle opening is adjustable up to 0.25 inches, which is wide enough to fit universal tarps. [Widely Used]-Heavy duty tents provide constant firm tension, perfect for securing tarps, improving structural integrity stability. It is perfect for tents, tarps, canopies, garage roofs, screens, shelters, boat covers, and more. The tarp clamp is made of durable material and is not easy to break. The size of the clip is 8 cm long, 3 cm wide, 2.5 cm high, and the length of each strap is 13 cm Color: black Material: nylon + plastic Package Contents: 15 x Tent clips 15 x Straps Only the above package contents, other products are not included. Note: Light reflection and different monitors may cause the color of the item in the picture to be slightly different from the actual object. The measurement allowable error is +/- 1-3 cm.