Black Seat Rail Guide For Detachable Arm Rest.

This is a plastic white seat rail guide. This fits on folding wheelchairs that have detachable armrests. These fit inside the rear of the seat frame pipe which is a 7/8" tube. This helps the chair fold and unfold smoothly and keeps the seat inline with the back when opened. 

This front U-shaped seat rail guide supports and connects the seat frame tubes to the back frame tubes. This black plastic part keeps the chair lightweight as it negates the need for heavy welded steel framing.

Note: The 7/8" dimension refers to the external diameter of both the U-shaped support and the tubing size which fits over the black plastic shaft. The shaft part is actually 3/4" in diameter and fits inside of a 7/8" tube.

California Proposition 65 Warning
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov