Wade, These cylinder bars are rebuilt by removing every other tooth if narrow spaced,then remaining are ground down and then have a bead of hard surfacing welded to them.Tooth spacing is 7_8" center to center,and depth of tooth is 9_16".Have sold many sets of these in corn_soybean country with excellent results and life.Bars are matched pairs and there is a core charge if you do not return yours.Price of $385.00 is for the set of 8 bars,less mounting hardware.I am located in Iowa and these bars can be shipped UPS to you.let me know if you have further questions. Hyper Harvest II