★Countersunk screws have a flat head and (in countersunk holes) can thus be screwed in flat to the surface of the plate, etc. for a smooth finish. ★Contents: 10mm screws x4, 12mm screws x6, 20mm screws x2, 25mm screws x4, 30mm screws x4. Compatible Chassis Mini 4WD and Mini 4WD PRO cars *Only use in countersunk holes.