yeah, that’s what i was thinking of. I can’t think you could get the leverage to tune a bass without one of those keys. I’ve seen keyless pegs on headed basses, but i’ve never seen pegs on the other end like this so i just assumed they came with a key
I mean, when I first got my bass, I took it to a repair shop and asked them to make the nut lower because the strings were way too high for my feeble forearm muscles. So I guess most bassists have good finger grip.