Ebay Thread tapping machines

[JOGARA]

https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F 153094804865

Anyone know if the collects on this will hold something like a UNC 1/4 tap?

Says metric on the listing but not sure if these collects could accept something just a bit off..

Any ideas?

[johngoodrich]

not 100% sure but if you look at the pic of the collets, one is m6-8 which should cover the shank size for 1/4 unc but don't quote me on that

[m_c]

My guess is the collets are not a fixed size, but they're what limits the torque, hence the recommended thread sizes.