Drilling cum tapping machines are state-of-art, precision and robust machines. An elegant construction, duel colouring gives excellent appearance and finish.. Special Features Ground and lapped column from seamless pipe. Sturdy and streamlined head stock. Back gear arrangement for tapping application. Machine base with accurate "T" slots. Improved lubrication. Models Drilling Machine AD-20 Drilling & Tapping Machine ADT-20 Pitch controlled Tapping M/C APCT-12 High Speed Drilling Machine