pulley and wheel with 10mm thread square nut compatibility

A coworker was looking for spare parts for his kids projects.

[4.7" diameter] The pulley has a large rounded groove so a rope or band could be used to move it.

[7" diameter) The wheel was modeled after the Harley Davidson (90's) fat boy wheel!

Both have a cut out center of 10mm in diameter with additional space to place a square nut. The wheels have space on both sides to fit 2 square nuts.