Hex Allen Wrench Screwdriver Set (10 Pack in Precision & Standard Metric Sizes 0.9mm 1.27mm 1.3mm 1.5mm 2.0mm 2.5mm 3.0mm, 4.0mm, 5.0mm, & 6mm) - Perfect for RC Cars, Quadcopters, & Helicopters

all good

The tolerance of these drivers is very lousy. Most of them either dont fit at all or spinning in sockets almost freely. In my set the highest deviation was 0.25mm on 5 mm driver, which is funny since the set pretends to have both 1.27 and 1.3 mm drivers :)

Package was received well, but the fit of the hex keys is not that accurate. Result is that the heads of bolds easily damage. Also, the size printed on the handle is barely readable, which doesn't make usage easier. Different colour handles or clearer print would have been better.