⚪︎Product⚪︎ BURTON 3D Disc Screws, Bolts, Washers Set of 6 Black It's a good idea to have spares on hand in case you lose them on the slopes. Please check the shape and specifications carefully. Mainly for 4x4 boards (those fixed with four screws per foot) For new and old 3D boards and discs (those fixed with three screws per foot) Cannot be used with EST bindings.