Sea To Summit Field Repair Buckle 20mm Sea To Summit Field Repair Buckles are designed to provide an easy repair if and when your current buckle gives up. To install, all you'll need is a screwdriver and a few minutes of your life spare. Providing you with an easy solution for your broken or worn out buckles, the Field Repair Buckles have been designed to be field replacement using a screwdriver. Unlike any other field solutions, you don't need to worry about sewing in replacement buckles when you're back. With a patent-pending design, the product has strong, corrosion-resistant stainless steel pins which are considerably stronger than standard plastic buckles and are a lot more resistant to snapping if stepped on.