If Our Turnbuckle Marbles Has Quality Problems, We Will Provide You With A New Product Or Refund Or Respond To Your Question. Your Questions Up To What You Are Satisfied With. Because We Are Confident In The Quality. Bungee TensionerBungee Tensioner High Quality Marbles - Our Turnbuckle; Balls Is Composed Of Of High Quality Nylon, Rubber And Plastic Beads. It Is Durable And Tear Resistant. Wear. Secure The Tarp Firmly With Plenty Of Tension. Its Service Life Exceeds 2 Years.The Length Of The Waist Cable From The Tensioner To The Beads Is 20 Cm / 7.9 Inches. The Extreme Extension Length Is Almost 39 Cm/15.4 Inches. It Is Longer Than Other Sellers And Secures The Tarp More Firmly.How To Use-This Bale Stretcher Is Easier To Use. Use Than Other Ball Stretchers, Just Pull The Rubber Cable Out. Through The Hole And Place It On The Ball. This Type Of Cable Has The Best Flexibility. Don'T Worry If Your Stuff Is So Big That The Cable Will Break.The Tarp Tensioner Is Suitable For Tents, Tarps, Posters, Tensioners, Expansion Rings, Tarp Supports Tarp, Rubber Tarpaulins, Rubber Bungees, Tents, Rubber, Curtains, Etc. Good Equipment For Camping Or Storage.