Bosch 8X PRO Impact Set with Standard Bitholder and Pick and Click Index (170 x 120 mm, Professional Accessory Screwdriver, Screwdriver)

Well, being a brand that I like I thought I'd test the bits out so I did... I drove a cheap workzone 8cm screw into a block of pine full of knots and the screw want all the way in and went a further 35mm before actually spinning out. So I chiselled the screw out and it turns out the screw had actually bent 5° 32mm from the tip due to one of the larger knots so from that the pz2 tip looks like it had suffered a little but it's just the paint that has come off. No rounding or actual damage.

Very handy set.The length of 110 mm is great.Those bits are Double: each bit on the end. So you can use them twice longer.Very satisfied.

Poor quality, lasted about 100 screws at best, and those were only 5mm screws into softwood. Used in Dewalt impact driver.

Great. These work well and have, so far, withstood a battering as we build an extension to the house. Have had one break, but that was about the only thing. Great value

They eventually snap after about 6 months, spin it round and get a full year out of one!!! Long reach better than a standard bit holder. PZ bit drivers PH heads too with little slip.

Out of the 8 in the pack, not a single one is straight. They are only slightly bent, so annoying. The concept is great, but you shouldn't have to straighten them. Hope I haven't weakened them. Would not buy again.

Grips the screws well no slipping

I use them only at home, but they fit perfectly into the screw, good job..