The spring loaded clip bracket that mounts under the tray is is 3-1/4 x 1 inch, the rail that mounts to the arm of the chair is 5-7/8 inch long and almost 1 inch wide.
05-HARNESS-DBL-LOCK Baby High Chair Harness with Dual Side Release Buckle
A pressed steel with chrome like finish that includes left and right channels that mount on the chair armrests, left and right spring loaded clips that mount under the tray, and mounting screws.
Highchair Tray Hardware Kit.
So happy to have finally found these. Thank you.
Submitted by: Pauline on 09/02/2015 08:03:17 AM