Wera 855/1 TH SB Pozidriv Bits, PZ 1 3 Set

The bits fit a screwdriver machine, cordless screwdriver or bit holder. That makes the set suitable for anyone who regularly switches between screw sizes and does not want to carry a separate screwdriver for each size.

Pozidriv or Phillips: the difference

Pozidriv and Phillips look very similar, but they are not the same. You recognise a Pozidriv screw by the small extra lines next to the cross in the head. A Pozidriv bit fits this head more closely than a Phillips bit, so the chance that the bit slips out of the screw or damages the head is smaller. Therefore, preferably use the right bit for the type of screw head you are working with.

Which size fits which screw?

The size of the bit must match the screw head, not only the thickness of the screw. Smaller screws usually call for PZ 1, the commonly used medium size is PZ 2, and larger screws often require PZ 3. If the bit is too small, it will slip through the head. If it is too large, it will not fit properly in the screw. A set with three sizes offers the solution.

What kind of work is this set suitable for?

Pozidriv screws are very common in woodworking, assembly work, window frames, furniture and fixing in construction and renovation. A set with multiple sizes is handy in the tool bag or toolbox, because you can switch on the spot. Always check whether the bit fits your machine or bit holder before you get started.

How to make a bit last longer

Press the bit straight into the screw head and do not turn at an angle, as this is the most common cause of wear. A worn or rounded bit is best replaced in time, because otherwise it will damage the screw head. Keep the bits together in the packaging so you can quickly find the right size.

Frequently asked questions

Which sizes are included in this set?

The set contains Pozidriv bits in sizes PZ 1, PZ 2 and PZ 3.

Can I also use a Pozidriv bit for Phillips screws?

Sometimes that is possible, but the fit is then less good and the risk of damaging the screw head is greater. Preferably use the bit that belongs to the screw head.

How do I recognise a Pozidriv screw?

Look at the head: a Pozidriv screw has small lines between the arms of the cross.

Does this set fit every cordless screwdriver?

The bits are intended for use in a bit holder or screwdriver with a suitable chuck. Check the specifications on the product page.