This Item Includes 20 Pcs Tarp Clips; Its Outer Size Is 3.31" X 1.81" X 0.47". One Size Can Clamp A Tarpaulin In Maximum Degree, Great For Outdoor Use, Such As Camping Tents, Awnings, Caravans, Tarpaulins, Canvas, Awnings, Boat Covers, Swimming Pool Covers, Etc.^The Tent Clip Is With An Inside Round Lock And An Outside Ring. This Flute Tarp Clip Makes It More Stable And Safer To Prevent The Tarpaulin From Falling; This Design Would Not Create Holes In The Tarpaulin, Easy To Remove After Use, Only A Little Wrinkle Marks Left.^The Tent Tarp Clip Is Made Of High-Strength Material, Waterproof, Weather-Resistant, Tear-Resistant, Lightweight And Durable;^Very Easy To Use. Just Take Out The Central Round Lock And Put It On The Tarp, Put The Outside Ring Part Under The Tarp And Clamp It.^A Hole On The Rear End Of The Tent Clip Can Be Attached To Any Standard Cord, Tether, Hook Or Rope, No Need To Cut Any Holes In The Tarp Or Cover^