This is a pair of line shaft arbors with a set of 3 wooden speed change pulleys. One arbor has a complete no. 00 Lunkinheimer grease cup and the other only has the bottom part. These support a 3/4" shaft and flex on the pins. The largest pulley is 5 inches in diameter and the smallest pulley has a crack. It is well greased and needs a good cleaning. It was last used on a metal lathe. Please ask any questions.