PLEASE SELECT YOUR INCUBATOR WITH THE TURNING RING OF YOUR CHOICE :   TX7 W/MANUAL EGG TURNING W/9 TURNING RINGS, 120V Stock #: 910-067/9 $ 237.00 (+ $ S&H) TX7 W/MANUAL EGG TURNING W/18 TURNING RINGS, 120V Stock #: 910-067/18 $ 237.00 (+ $ S&H) TX7 W/MANUAL EGG TURNING W/27 TURNING RINGS, 120V Stock #: 910-067/27 $ 237.00 (+ $ S&H) TX7 W/MANUAL EGG TURNING W/48 TURNING RINGS, 120V Stock #: 910-067/48 $ 237.00 (+ $ S&H) TX7 W/MANUAL EGG TURNING W/72 TURNING RINGS, 120V Stock #: 910-067/72 $ 237.00 (+ $ S&H)