These are new old stock. From Stuart Deal's (classic collectables) parts and tractor collection. Those in the industry will know that name. Lot of 4 early ERTL push nuts, push caps. I believe these are for the pedals but I could be wrong. If there are any pedal tractor pro's out there that can help me identify exactly what these are fitting and sized for I would appreciate it. Sold in lots of 4 for 19.99 plus a paltry shipping fee.