Machine tools, namely separating-machines, high-speed separating machines, grinding machines, high-speed grinding machines, cutting-off grinding machines, high-speed cutting-off grinding machines, lathes; machine parts for machine tools, namely grind-discs, cubic crystalline nitride (CBN) grind-discs, diamond grind-discs, grind-disc adaptors, car cases for rings of grind-discs; machine parts, namely coolant supplies devices for grind-discs, particularly coolant supplies to match the grind-dis...