AMGO Double-Joint Bionic Arm Kits For Two Post Lifts The new AMGO Double-Joint Bionic Arm Kits for two-post lifts enhance the lift's features by offering a minimum pad height of 2-3/4" and 180° free swing, facilitating easy arm access and positioning for various vehicles, including electric vehicles and low-clearance vehicles.Sold Individually. Kits Required For AMGO Two Post Lift Models BP-9 Requires (2) #20908A and (2) #20908B BP-9X Requires (2) #21006A and (2) #21006B BP-10 Requires (2) #21006A and (2) #21006B OH-9 Requires (1) #20909A, (1) #20909B, (1) #20911A, (1) #20911B OHX-10 Requires (1) #20909A, (1) #20909B, (1) #20911A, (1) #20911B OHX-10H Requires (1) #20909A, (1) #20909B, (1) #20911A, (1) #20911B