Looks like a Clarkson autolock collet![]()
From what i remember using mine i think just a normal RH Mate...Very rarely use my head as just use the set of R8,s i have straight up the snoutAre those not LH thread?
looks close... will check tomorow.....Might be a 4c collet also the size looks about right.

Hope i am not going mad here with confusion![]()
Nope! i am going to embrace my madness with pride mate as i did think they where ClarksonI think the only confusion is that you (and I) might have meant Crawford Trugrip collets.
looked at my Clarkson chuck today and hit myself on the hand with a nice old heavy file
www.model-engineer.co.uk



