Flip & Drive System – Drill-Countersink-Screw System - Replacement parts for 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 the screws. One-handed operable locking system for quick switching between drilling and screwing applications - no need to re-clamp. The countersink with pilot drill allows for drilling, countersinking, and deburring in one operation. Change unit No. 10 suitable for 4.5 mm screws. Countersink and pilot drill are suitable for steel, aluminum, wood, and plastic. Ideal for use in furniture construction and interior finishing.