Flip & Drive System – Drilling-Countersinking-Screwing System - Replacement parts for the accessory set DT70779T-QZ. Change adapter includes Extreme Flextorq bit and depth-adjustable pilot drill with countersink. The change adapter reduces the time between work steps - drill pilot holes, countersink, and then switch to drive screws. One-handed operable locking system for quick switching between drilling and screwing applications - no re-clamping required. The countersink with pilot drill allows for drilling, countersinking, and deburring in one operation. Change unit No. 6 suitable for 3.5 mm screws. Countersink and pilot drill are suitable for steel, aluminum, wood, and plastic. Ideal for use in furniture construction and interior finishing.