Axial AX310741 Hex Hub Set (4 Piece), 12mm FEATURES: Plastic construction, black in color Allows the use of IFD (Interchangeable Face Design) wheels INCLUDES: Four 12mm Hexes Four Rear Adapters Four Front Adapters Four 3x3mm Set Screws Four Steel 2.0x11mm Pins JXS 01/09/14 IR/JXS The product is durable