Features: Made of high-end nylon and fiber material, can be used in various hostile environments, durable to use. The product not only can bespread the top for Nerf N-Strike Elite Retaliator Blaster completely, but also can be used on siding rail and bottom rail Not only for a cool decoration, but also can be used to joint more other parts, such as aiming mirror, hand handle, bullet-stored cover, triangle sighting device etc. Screws that come with the product is convenient to install these grooved rail. Tested for quality and durability Description: Perfect Gift Choice: As a perfect gift to your kids, son, toy gun lover. Appropriate for Nerf N-Strike Elite Stryfe Blaster etc. Usage: cut off and remove the original plastic buckle on for Nerf, put grooved rails on it and then fix it with set screws and a hex wrench. Specification: Model: W0040, W0041, W0042 Material: Nylon + Fiber Color: Black Quantity: 3pcs(W0040), 5pcs(W0041, W0042) W0040: 1#,2#: 18614mm, 3#: 50.514mm W0041: 1#: 15614mm, 2#,3#: 10014mm, 4#,5#: 70.514mm W0042: 1#: 21314mm, 2#: 18614mm, 3#: 989mm, 4#: 409mm, 5#: 309mm Package included: The product showed has different kinds of package quantities. Different model has different quantity. Please choose it as you like. Any information uncertain, please contact us, Much thanks.