I started with the 10" version but decided it was too big for my needs. I figured there would be no difference in size for less than $2. I was wrong. The 10" vise was 4 pounds heavier and required more mounting space. Interestingly, the depth of the mounts was the same, about 4 inches, but the width was greater on the 10-inch vise. fits, but I'm very happy with how smoothly it runs. I used a 7/8" birch pin for the grip and a pair of 7/8" rubber plugs for the grip ends. Used a 6/4 inch cherryβ¦