Sorry to be late to the conversation but a wood working club I used to belong to use about 2,000 wheels a year for the Toys for Tots program we ran. The wheels came from here. We used wooden dowels for axles. We purchased what they called 2nds. 98% of the wheels were usable.
Casey's Wood Products, We at Casey's have it all - wood dowels, blocks, balls, toy wheels, cutouts, shaker pegs and more. Anything for your crafts or woodworking project we will have it in stock for immediate shipping. We do offer 1 or 2 day UPS shipping if you need your order in a hurry. You can call us at 1-800-452-2739 if you need a human in a hurry for a question or something. (caseyswood.com)