Aluminum 14.000 Degree Wheel Not stamped, but CNC machined billet aluminum for accuracy. These oversized degree wheels are precisely etched on both sides with 1є increments. Features easy to read intake valve opens, intake valve closes, exhaust valve opens and exhaust valve closes on one side and intake lobe centerline and exhaust lobe centerline on the other. Purple anodized. Standard 1” center hole for use with most degree wheel sockets. Instructions and laminated reusable specification sheet are included.