This is a new old stock, SCS Gearbox Inc. 10 spline quick change sportsman gear set no 1018. Being a nos part, the box has a lot of shelf ware, gears look good. Listing several different sets of these. Please contact me about combined shipping if you want more than 2 sets. There is 2 gears in this set. Sprint car, late model, modified. There is 2 gears in this set. Sprint car, late model, modified.