Rotary Adapter Extension Kit includes four (4) 3-1/2" and four (4) 5" adapter extensions (FJ6171-1 and -2), as well as a mounting rack with hardware. Designed for use on RA/TA lifts (SPO/A10-RA/TA, SPO12-RA/TA, 800 series & prior SL210's, and SL212's), this kit provides additional lifting height when vehicles require additional clearance and can also be used to level a vehicle on a lift. When used on a SmartLift, these adapter extensions will only work with old-style RA/TA adapters with a 2" bore, not compatible with new Trio superstructures. Local sales tax rates will apply on all Rotary Lift purchases that are drop-shipped from the manufacturer. When purchased with a lift, additional discounts may be available. Please call for better pricing.