Replacement Office Chair Armrest Arm Pads - Extra Soft - Pair - S5398 3" Wide x 11.5" Long 1/4-20 threaded mounting screw holes are 4" (100mm) & 5.2" (132mm) apart (hardware not included) Soft polyurethane pads Cut-out area on underside of arm pad for mounting fixed or adjustable arms measures 7 3/4" long and side to side tapers down from 2 5/8" wide toward the back and 2 1/8" toward the front Universal - left or right side (both are the same) - Sold as a pair - Set of 2