Rotary Thread-Up Adapter Kit includes a set of four (4) FJ6214 rubber truck adapters. These TA adapters are recommended for use on 3-stage arms when lifting trucks or other frame vehicles. When used on an SL210 SmartLift or SPO Series Three-Stage Arm Lift, these 2"-bore adapters will only work with 800 series (& prior) lifts, 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.