Chainsaws; Abrasive disks for power-operated sanders; Air filters for automobile engines; Air screwdrivers; Bits for power drills; Blades for power saws; Cam shafts; Core drilling bits; Drill sharpening machines; Electric welding machines; Embossing machines; Fuel pumps for land vehicles; Mining bits; Power-operated saws; Mechanical seals in the nature of sealing joints for vehicle engines