Preowned morel keyway roller and. these ifters measure .936" overall thickness diameter with an .850" roller. These are keyway lifters, centered push rod cups (no off set)) and designed for rebuilding including a DLC coating. Additionally, these are full time pressurized oiling.. There are 16 used pieces in this purchase and should be noted that they are centered and rebuildable. We appreciate your interest in our store and hope we can do business together. Thanks for looking! Please add us to your favorites and note that the box used for shipplng is NOT THE ORIGINAL BOX.