I checked 'em out,since I've got them on a table right now. I just finished changinging the bushings themselves a few days ago,and that was some process..lol,rust,etc. The are 10 of them overall,so here's the deal: 8 of them are 7" long with 12 mm threads, 2 of them are 8-3/4" long with a 7/16"...