OCG 2 Pairs Rear Mounting Brackets for Ball Bearing Drawer Slide, Side Mount Drawer Slide Rear Mounting Brackets for Face Frame Cabinets fit 1.77 inch(45mm) Width Drawer Slide - Amazon.com
Salice Wood Screw Drawer Slide Rear Mounting Bracket White Plastic (Compatible with:Salice A7555 series slides) Sold As Each ASO755AJND
Blum White Plastic Slide Bracket for Blum Drawer Slides T230M and UCT320M - Rear Socket for UCT230M (2) - Includes Left/Right Brackets and Screws in the Drawer Hardware department at Lowes.com
Prime-Line White Plastic Backplate in the Drawer Hardware department at Lowes.com