Precision-engineered for 50 type broken bridge aluminum alloy doors and windows – ensures a secure, stable fit for insulated glass frames Constructed from lightweight aluminum alloy (approx. 130g) – resists and wear while reducing load on window frames One-piece force hinge devise provides smooth, consistent closing action – enhances door/window sealing and long-term durability Fixed base with card-type arm for easy built-in installation (no cover required) – simplifies replacement or new assembly Available in black or white finish to match modern window profiles – clean appearance for residential or commercial applications, Manufacturer: Coal2ToalPW