This pulley measures 3.500" wide where the belt rides, its overall dia. 5.750" and uses two single row sealed ball bearings.
Mounting spindle is there but buyer will need a bolt and T-nut to make the idler pulley complete. Finish is machined cast alum.
Another interesting thing to note is Cragar would install a 1/2" spacer to get the 3.50" wide idler pulley so if you need this for a 3.00" 75mm wide application take the idler apart remove the spacer, reassemble and you now have a 3.00" 75mm idler pulley from the golden era of drag racing.
Bearings are little crunchy so if you are going to run the idler pulley you will want to replace those with two of #600-0001A bearings.
Note: This is a used item. This item might have been taken in on a trade. RBS may have inspected this item and deemed re-usable. There is no warranty expressed or implied with this item.