Exactly the same reason to have a set of SAE sockets handy even if you only work on
metric equipment. a 3/8" socket will fit very snuggly on a rusted 10mm bolt.
So the consensus is... you need to have every size with no skips in metric, SAE and
whitworth with wrenches, ratchet wrenches, long wrenches, offset wrenches, flare nut
wrenches, stubby wrenches, stubby ratchet wrenches, short wrenches, extra long wrenches,
extra long flex head ratchet wrenches, zero offset long wrenches and zero offset ratchet
wrenches.....
6 point shallow sockets, 6 point deep sockets, 6 point semi deep sockets, 12 point shallow
sockets, 12 point deep sockets, 12 point semi deep sockets, e-torx sockets, allen sockets,
torx sockets, security torx sockets, torx plus sockets, tripple square sockets, crows foot
sockets, low profile sockets, pass through sockets and extra deep sockets in 1/4", 3/8",
1/2" and 3/4" drive sizes.
and here endeth the GJ offical motto
Hang on a minute... dd I mention impact sockets....