The Rexhubro Boat Cover Snap Extender Is Made of Durable Black Nylon Material and Can Be Extended from 1 To 3 Inches, Providing A Perfect Solution for Boat Cover Shrinkage. Prevents Tearing And Damage: Connect The Snap Extender to Your Ship Hood to Avoid Tearing And Damage Caused by Excessive Tension. The Sturdy And Durable Nylon Webbing Ensures Long-Lasting Protection. Easy Installation: with Finger Loops, The Snaps Extender Can Be Easily Connected to Your Boat Cover. It Provides A Secure and Reliable Connection to Keep Your Ship'S Cover In Place. Heavy Duty Snap: The Snaps Extender Features A Heavy Duty Snap That Can Withstand Years of Use Without Rusting. It Ensures That Your Boat Cover Remains Securely Fixed Even in Harsh Weather Conditions. Packaging: Our Package Contains 10 Retractable Buckles, Sufficient Quantity To Meet Your Needs. High-Quality Design And Construction Are Guaranteed To Add To Your Trust. Note:Sockets and Stud Size 3/8" !!!