That is a Limited Edition Countersunk Screw Set with a black colored finish. Countersunk screws sit flush because of the area they've been mounted on, meaning they don’t stick out and harm the track surface. Therefore, you don’t need certainly to cover them up and will also offer your Mini 4WD machine a lower life expectancy ground approval setting. These 2mm diameter screws are constructed with durable metal.
• 10mm Countersunk Screw x4
• 12mm Countersunk Screw x6
• 20mm Countersunk Screw x2
• 25mm Countersunk Screw x4
• 30mm Countersunk Screw x4
• may be used as replacements for countersunk screws in restricted edition VS & Super XX Evo.1 chassis.