I regretted not finding the 40% off coupon (edit: I had 'just' the 20% that could have been combined with the 40%
)when I first bought the metric set in Sept, but oh well.
I have used the set several times in the past month to replace lower quality M2, 2.5, and 3 hex head bolts on helicopters. Also to replace plain M2 and 2.5 plain hex nuts with nylon lock. It's so nice to have this set. I'll order replacement hardware from RTL this year.