Here are most commonly needed screws and hardware for Backfire Electric skateboards. Please select the specific option which works for your board. Each photo contains the UOM of 1 set, and sell as set, or specifically how many pieces are listed. For example: If you buy 1set of M3*10MM screws, you will get 4 pieces of bolts as showing in the picture; or 1 set of M6*20mm screws for battery or ESC enclosure, you will get 6 pieces as 1 set showing in the photo. The screws to hold Mini battery cover on top of the deck are 8 pieces of M4*16mm. Tools or other hardwares are not included, which require seperate purchase. If you can not find the specific hardware you need for your board, please reach out to our tech support via email for more details or questions.