Here is a used set of Quarter Master Ultra duty 10 spline quick change gears. They are set # 16. 18/24 tooth count. They are 5.49 ratio with a 4.11 ring and pinion and 6.48 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 pitting on the teeth, good used condition. Any questions please ask.
