I have three Peerless lathes and the spindle hole on all three is too small and will not take the Starret collets. The Peerless collets fit perfectly but the Starret collets will not go in. The fit is close but they still will not go. If I was in a pinch I could drive out the collet locking pin and machine the hole out a little more with a reamer but I do not know if a person would want to do this if this was the first lathe they ever owned and did not have an engine lathe with collets large enough to hold the spindle during the machining operation. This could also be done with hand reaming by securing the spindle in a vice but the person doing the operation runs the risk of damaging the lathe components.