Douglas Small Plastic Insert Bushing Set of 2

Be sure and follow the measurements below. There are two sizes of Douglas plastic inserts which fit inside the post of the chair base. The swivel tilt mechanism fits into the insert. Fits in the post with inside dimension of 1 5/8". The outside dimension of the insert top is 1 3/4". 2 inserts included. We recommend lubricating the parts with white lithium grease prior to installation.