KTC-430ATC type and above Drilling EDM use linear guides and roller bearings, very fast, completely stable and accurate. This series including three types: 1. C-type; 2. Traveling head; 3. Double column Automatic 16 & 30 copper tube changers available. Drilling capacity from 0.2 mm to 3.0 mm diameter brass or copper electrode tubes. Direct read-out of wire cutting NC program. Can support two machine uses in one. Perfectly accurate machining, avoids worker inattention. Fast electrical discharge, fast motion, reduces production time. Can edit or import processing coordinates via computer without NC programmer present.