Ergo360 Kahuna Large Office Chair Arm Pads (2 Piece Set) Extra large chair arm pads with superior 2" thick cushioning and maximized supportive surface area. The right and left pads are mirror opposites, where the ergonomic design optimally accommodates each arm. The bottom attachment screw holes are measured 4" from center to center, please double check your chair for this compatibility measurement before ordering. Some pictures show the arm pads installed on a chair for illustrative purposes, the chair is Not included. Pricing is per complete pair (right and left) of chair arm pads. This product qualifies for Free Shipping within the USA. See below for full product description.