I bought this die holder because I knew I was going to modify it. I cut out a 1" hex pocket to allow this holder to work with both round and hex dies can. That works great. There are two things I would like to change. I wish they would provide a 3/8" shaft and I wish they would provide a side grip or at least knurl the body so it's easy to hold. However, it does what I need for my hobby lathe and it was very affordable.