Our tarp clips securely attach to your tarps or blankets. The alligator mouth is specifically designed to offer a more stable closing between the tarp and clip, allows a more effective clamp only by squeezing it. Simple to Install and Remove Easy-to-use tightening screw. The rotational lock allows you to tighten or loosen in order to customize the tightness of the adjustment of thin or thick covers, no worry about damaging or detaching your tent or canvas. Strong Gripping Power Heavy-duty lock grip tarp clips designed with adjustable spiral thumb screws and alligator mouth with teeth hold tarps much more stable than the normal clips, without using any tools or making any holes. We truly believe we make some of the most innovative products in the world, and we want to make sure we back that up with a risk-free ironclad 45 day guarantee. If you don't have a positive experience for ANY reason, we will do WHATEVER it takes to make sure you are 100% satisfied with your purchase. Buying items online can be a daunting task, so we want you to realize that there is absolute ZERO risk in buying something and trying it out. If you don't like it, no hard feelings we'll make it right. We have 24/7/365 Ticket and Email Support. Please contact us if you need assistance. Remember: Shipping usually takes 2-3 weeks read our Shipping for more details!