Machines and machine tools for boring, cutting, and finishing workpieces; boring machines, reaming machines, and lapping machines; resurfacing machines for cutting and finishing engine cylinder head valve seats and engine pre-combustion chamber counterbores; component parts for boring machines, reaming machines, lapping machines and resurfacing machines; machine spindles, cuffing tips and cuffing tip holders for mounting cutting tips on machine spindles, all for use in boring, cutting and finishing workpieces; power tool parts; collets, cutting bits and drill bits; clamping fixtures for holding workpieces on machining tables and parts therefor; pneumatic impact pullers for extracting ring inserts, bearing casings, axles, plugs and studs from counterbores in a workpiece, and parts therefor.;