This vise screw is decent but I have one complaint about the design. It's essentially a bent/folded piece of metal to hold it in place. He can't handle pressure at all. My leg vise lasted about a week before the T-handle came loose from the screw. what to expect. Luckily I wasn't in the middle of a project when it happened. The hole is 1/4 inch so you can use any pin or rod with that diameter. Replacing is easy enough. "I don't think the hollow pin is designed to withstand heavy clamping forces. The vise screw works well. Just note that the T-handle can pop right out. I'd just replace it from the beginning if I got it." bought again for all other visa applications.