Structure: Double-layer aluminum alloy split combination.
Process: Screw-driven expansion; expands 0.5–0.7mm to both sides of the cavity when tightened, achieving 100% filling rate.
Function:Automatically level when screwing in screws, with dovetail positioning to prevent misalignment.
Application: Mainstream aluminum doors/windows, common broken-bridge aluminum profiles, profiles with cavity height over 8mm, and projects requiring efficient installation.