DEWALT DT7999TQZ PH3 50mm IR Torsion Bit (5)

If you use an electric Screwdriver or an Impact Driver, you’ll need Insert Bits so you can tackle different jobs and screw types and replace Bits as they wear out. To choose the right bits, think about how long the Bits should be, the head size and even how the bits are supplied. Do you need your bits on a handy key ring, for instant bit changes while you work? Or is a hard-wearing flip-top box with a larger number of bits a better option?

Another thing to think about is whether the Bits are capable of dealing with the material you’re working with; Impact Rated or Double Torsion Bits can offer longer life and work with tougher materials than other Screwdriving Insert Bits.