Plastic Ladderlock Rucksack Sliders Buckles for the 25 mm / 1 inch webbing strap. The package contains 5 pieces. Made of black durable plastic. Plastic regulators are one of the necessary accessories for the production of backpacks and bags. Imagine these products without those little plastic extras. It's hard, isn't it? Regulators allow you to adjust the length of not only the backpack harness but also the strap in the bag. Thanks to the regulators, you can manoeuvre the circumference and length of the harness. Plastic regulators are used not only in belts but also in the clothing industry as a decorative element.