These are used andconsidered a three inch chuck (3.375 od). They are both Hardinge. One is afactory 3 inch bore marked 3.000 and 93200,the other is bored to a small first step 1.60 & a second step of1.75, It looks worse in the picture than it is, it’s not pitted deeply justdiscolored, and the back side that contacts the closer ring look good. . I haveno way to check the accuracy of these and while I try to point out defects thatI notice, these are sold As Is No Return

If you are notfamiliar with these, to use them you will need to buy or make a special colletcloser that fits the spindle on your machine and has a taper that fits thelarge end of the collet to close it.