This is a new, unopened item. Please check the images and understand before purchasing. #AranMini4WD #AranPlasticModel #Mini4WD ◆ Product Description These are parts that are useful for setting up and improving the performance of your machine. This is a set of flat-head screws. By countersinking the screw holes on plates attached to the underside of the chassis, the screw heads will not protrude, resulting in a smooth bottom surface, preventing the screws from contacting the track. Includes 4 screws of 10mm length, 6 screws of 12mm length, 2 screws of 20mm length, 4 screws of 25mm length, and 4 screws of 30mm length. The black color also makes the screw heads less noticeable. Be sure to countersink the holes in the plates you are attaching using a 2mm countersink bit (for electric rotary tools). Basic specifications: Set of 20 high-strength stainless steel screws in 4 different lengths.