Drive system parts for Tamiya Mini 4WD (gear bag set). These are for repairs or as spare parts. Also suitable for sorting and selection. There are 19 sets available. If you would like more, please let me know in the comments and I will try to find them. There are 14 sets for single-shaft motors and 5 sets for double-shaft motors. If purchased from customer service, the assembly instructions show the price to be 600 yen for single-shaft and over 700 yen for double-shaft. (These prices include the metal fittings set + gear bag set, and the metal fittings, gear set + motor, respectively) I think this is a good deal. Thank you for your consideration.