This is a pair of JConcepts Ultra Front Wheel Hexes in Blue for the Team Associated B5, and B5M Buggies. Aluminum construction, anodized blue in color Converts the front hubs to a 12mm hex adapter system Fluted design eliminates unnecessary weight Compatible with the JConcepts Titanium axle JCOC2177, or the stock Team Associated axle, ASCC0408 Weighs only 0.04oz (1.1g) each including screw Two Ultra Front Wheel Hexes and two 2mm Steel Screws jxs 09/04/14 ir/jxs (Any special application or something it will not work with?) &