... lead rail, 5.ball screw Performance characteristics: CNC Advertising Engraving Router DM-12181, Germany-High-precision ball screw ... unique way to preserve the original point. 5, Dragon Mobile, Bed overall channel steel, sturdiness and durability, prolonged ... double nose, greatly enhancing efficiency. Performance Parameter:CNC Advertising Engraving Router DM-1218X,Y working area 1200mm*1800mmZ working ...