Check the listing for details. Chester - Standard Quick Change Gears - 10 Spline - 17/27 - Set 28C. Condition: New. Listed at 49.99 USD. Chester - Standard Quick Change Gear These high quality standard gears are manufactured out of 8620 High grade steel and hobbed to a fine finish. They're also heat treated to ensure strength and longevity. • 10 Spline• Fits all major brands of quick change rear-ends. Winters, Tiger, Frankland. 17/27 Tooth Count 4.11 R&P Ratio- 2.59 Low- 6.53 High 4.86 R&P Ratio- 3.06 Low - 7.72 High