Groovers 1, Double column 2, Gas-cooling without pollution 3, CE and ISO9001:2008 4, higher efficiency *Flexible stainless steel blade*Wood ... -480-80 80mm1, Double column 2, Gas-cooling without pollution 3, CE and ISO9001:2008 4, higher efficiency 5, USD38800/setlens ... groover # 1800A 1. DC motor 2. Suitable for PC,plastic,glass lenses 3 ...