Electric grinding apparatus, namely, grinding machines for the treatment and shaping of wood; machine parts, namely, guides for power tool machines; adapters for tool bits being parts of machines, namely, non-electrical adapters for use in connecting tool bits to drive heads of power tool machines; abrasive tools being parts of machines, namely, abrasive disks, abrasive pads and abrasive tool bits for power operated sanders and power operated grinders; cutting inserts for machine tools, namel...