The OTC Heavy Duty Spindle Adapter, No. 5091, is designed for low-life transmission jacks. This adapter holds the spindle assembly securely in place during king pin service, eliminating the need to completely disassemble the brakes and reducing the spindle weight while handling. For maximum convenience during service, the spindle assembly can be raised to a comfortable working height while replacing king pin bearings or bushings. The patented design works with standard heavy duty truck bolt patterns and wheel stud sizes, and adapts to most low-lift transmission jacks. The spindle adapter is covered by OTC's lifetime warranty.