The perfect kit for a cylinder head overhaul and decoke. With an electric drill and this kit you can increase the airflow through your cylinder head inlet and outlet ports, increasing the performance of your engine. 1 x Tapered A3 mini grinding wheel. 1 x 6mm A24 mounted grinding wheel. 12 x plain & tapered cartridge rolls 10mm(4), 12mm(4), 19mm(4). 1 x 30mm x 10mm 80 grit flap wheel. 1 x wire decarb brush. 2 x felt cones (12mm & 19mm). 1x 80g bar supercut polishing compound.