Here is a used set of Quarter Master Ultra duty 10 spline quick change gears. They are set # 19. 21/25 tooth count. They are 4.91 ratio with a 4.11 ring and pinion and 5.78 ratio with a 4.86 ring and pinion. I used these in a vintage dirt race car and they worked good, no issues. No chips or major damage on the teeth, good used condition. Any questions please ask
