Instructions: Maybe you do not know how to use them, don't worry, you can check our picture for step description, you can also search " flat side release buckles " on youtube for instructions Wide applications: These buckles and nylon straps fit for backpacks, women bags, dog collars, belts, luggage, harnesses, etc 38 mm width: Plastic buckles, tri-glide slides and webbing straps are matched in 38 mm / 1.5 inch for DIY making women bags, backpacks repairing Package includes: 6 x plastic buckle 6 x tri-glide slide 1 x 5 yards webbing strap