Replace a cracked or broken neck joint before it causes hose air loss or tool detachment during use. This complete neck/joint assembly includes the buttonhole locking feature, so the replacement restores the original tool-lock function. The buttonhole is the primary retention point for attachments on these models. A worn or broken buttonhole allows tools to pull free during vacuuming, which interrupts work and can damage the tool port over time. This assembly replaces both the joint body and the buttonhole in one part. Compatible with GoFit 3, GoFit 10, GoFree Flex Pro II, GoFit 3 Cordless 4Ah, and 23 additional ProTeam models. Genuine ProTeam replacement part for commercial use. CDS supplies genuine ProTeam parts with same-day order processing and quantity pricing for facilities maintenance accounts.