Check the listing for details. ENGINE STAND HEAD ASSORTED DESIGNS TO MOUNT. Condition: Used. Listed at 35.00 USD. ENGINE STAND HEAD ASSORTED DESIGNS TO MOUNT. Condition is "Used". Mounting shaft at 2.350" diameter x 6" long with bolt hole at 3 1/4'' from the front collar. Mounting slot opening 3 1/4" x 1/2", flat base 10 1/2" long x 3" high x 1/2" thickness. Some engine mounting heads have adjustable swing arm as in the photo. Lower hole from center to center left to right is 12 1/2" . These engine mounting heads were mainly used when assembling 4-cylinder, v-6 and straight six cylinders. Some special mount can be used for the Subaru engines. These engine mounting heads have 4 holes in the shaft to position 4-cyl and straight 6-cyl at a upright, left sideways, right sideways and upside down for ease of assembling and engine. The V-6 and V-8 will have a tilt if used on those engine blocks. There are a mixtures of engine mounting heads as in the photos. Please email if you have any questions to ask. PLEASE NOTE THAT I DO NOT HAVE ANY ENGINE STAND HEADS WITH SWING ARMS ON THEM LEFT. YOU WILL RECEIVE THE ENGINE STAND HEAD WITHOUT THE SWING ARMS LIKE THE ONE RESTING ON THE WOODED CRATE.