Control mechanisms for machines; parts and fittings therefor; spoke and disc hand wheels; hand wheels with indicators, hand wheels with dial position indicators; crank handles, arm handles, locking handles, lever handles and adjustable handles; hand grips; folding grips, locking knobs and knurled knobs with graduated rings; engines and parts and fittings for engines; plug screw caps, gauge caps, indicator level caps, dip stick caps, oil caps, breather plugs, inlet and outlet plugs; all included in Class 7.;