friction hinges Material:202/ 301/ 304 Groove form: square ... , length: 8" to 36" ,width:18,22 PWS friction hinges , 80540124 wind supporter for PVC and Aluminum alloy window ... produce window handles, door handles, window hinge, door hinge, friction stay, wind supporter, espagnolette bolt, door bolt, PU Foam, ... gasket seal, fasten bolts, pneumatic tools and so on. friction hinges , friciton stay,five bar