• Highlight: OEM complete neck/joint with buttonhole for ProTeam uprights, the part that lets the body lock upright between cleaning passes
• Best For: Repairs where the upright won't stay vertical or the recline mechanism feels mushy — a worn neck/joint is the usual cause
• Expert Note: The buttonhole feature is what catches the upright detent; an aftermarket joint without the molded buttonhole won't lock and is the No. 1 reason DIY repairs fail
