Four-bar friction stay, friction hinge, PWS hinge, window hinge, door hinge, aluminum alloy hinge, zinc alloy hinge for UPVC/Aluminum windows and doors.80440101/103/104/105/90440102 four-bar friction hinge / stay for window and door use. Color: silver Material: Stainless steel 304/301/202/316 Thickness of the four bars: 2.0mm/2.5mm/3.0mm Length: 8''/10''/12''/14''/16''/18''/20''/22''/24'' Stainless steel hinges, friction hinges, four-bar, five-bar, six-bar friction hinges, very good quality for top-hung, casement U-PVC, Aluminum and Wooden windows and doors. PWS handles, beautiful color, wonderful design, delicate tech, will be your good design, delicate tech, will be your good choice for your house, add more elegance and beauty for your house. window handle, door handles, window hinge, door hinge, friction stay, wind supporter, espagnolette bolt, door bolt, PU Foam, glass glue, cleaner, Aluminum rail, brush seal, gasket seal, fasten bolts, pneumatic tools and so on