Pulley is set up for a one inch bore with a .125" keyway and designed to be used with a .500" or .750" wide drive belt. Pulley has thirty three teeth which are 8mm HTD pitch.
Pulley is .895" wide. Some one has narrowed up this pulley on one side so the anodizing has been machined off one side.
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.