This is the complete drill/tap solution, ranging from 1/4" to 1". The Powerbor Drill/Tap delivers great time and efficiency savings when compared to conventional tapping applications.Provides top quality threads every time, the 2-IN-1 Drill/Tap is one tool that drills and taps. A great time saver, available in sizes 1/2", 5/8", 3/4", 7/8" and 1". Also available as a handy set.Specially designed taps are used together with either Blue Powerbor 1/4" Hex shank drills or Blue Powerbor cutters for drilling the core diameters.The Powerbor COMBI Drill/Tap Kit eliminates the need for tapping attachments. The 1/4" - 3/8" combi range of drills and taps are used with a unique adaptor having a standard 3/4" dia 2 flat shank with a 1/4" Hex bit drive. Fitted in seconds it means threads can be drilled and tapped easily when required.