DeWalt DT71572 Screwdriver Bit Set (45 Piece)

In-Depth Look

Worn or poorly fitting bits cam out and damage screw heads, so it helps to have the right bit for each screw to hand. The DeWalt DT71572 puts the common drive types in one case.

What’s Included

The 45-piece set covers Phillips, Pozidriv, Torx and slotted screws. Bits come in 25mm and 50mm lengths, which helps when working in tight spaces or driving longer fixings. Check the listing for the exact sizes of each type before you buy.

Getting a Good Fit

Match the bit to the screw: Pozidriv bits in Pozidriv screws and Phillips bits in Phillips screws. Using the wrong one is a common cause of cam-out. Replace bits once the tips are worn.

Storage Case

The compact case keeps the bits sorted and fits in a tool bag, so you are not searching through loose bits.

Summary

A 45-piece set with Phillips, Pozidriv, Torx and slotted bits in two lengths, in a compact case.

How It Compares

This DeWalt set (listing code DT71572) holds 45 pieces in a plastic case with a bit holder. The bits come in two lengths, 25mm and 50mm, and the drive types included are Phillips, Pozidriv, Torx and slotted. The common sizes are supplied in duplicate, so a worn bit has a spare waiting in the case. The case keeps the bits together and the holder takes them in the driver.

The drive types look alike at a glance but are not interchangeable. A Pozidriv recess has extra marks between the arms of the cross and fits a Pozidriv bit better than a Phillips bit. A Torx recess is a six-point star, and the number after the T is the size of the star. Slotted is the single straight cut.

The set is used in a driver or drill. This site covers two drivers it could be used in: the DeWalt DCD796 combi drill and the Milwaukee M18 FID3 impact driver. For help choosing the screw itself, see our guide on which screw for which job.

Common Questions

What is the difference between Pozidriv and Phillips? Pozidriv has extra marks between the arms of the cross, and a Pozidriv bit fits a Pozidriv screw more securely than a Phillips bit does. Using the matching bit helps prevent the bit riding up and slipping out of the recess, known as cam-out.

What do Torx sizes like T20 mean? Torx is a star-shaped drive. The number after the T is the size of the star, so match it to the screw head.

Why does a set have two bit lengths? A 25mm bit suits open work where the driver can sit close to the screw. A 50mm bit reaches into recesses and through brackets. Pick the length that lets the driver clear the surrounding material.

How do I tell which bit fits a screw? Try it in the recess. The right bit sits snugly with no wobble and does not rock from side to side. If it moves around, try the next size or the other drive type.

Use the bits in a tool that suits them, and follow the tool maker’s instructions.