New answers tagged drilling
1
Aha! (and I'm glad to see I wasn't the only one who was mystified):
https://www.reddit.com/r/whatisthisthing/comments/cw2pqv/what_are_those_plastic_things_in_my_drill_bits_set/
(they're for holding flat-head screws in place whilst you start screwing, so associated with the screw-bits, rather than the drill-bits)
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