These are parts for the Tamiya 1/10 electric radio-controlled car Clodbuster: a 50T counter gear, 850 metal BT1, 1260 plastic bearing BD7, and counter shaft SA4. These are used parts, disassembled and cleaned from an assembled kit. The instruction manual is not included. They are approximately 30 years old and in fair condition, but I hope those looking for these parts will consider them.