... laminated glass.5. Method of production: lathe machining, welding, boring and screwing,,,6. Dia. of threaded ball bolt: M12 ... features routels can be chosed : flat head routel , countersunk head routel, outside-assemble routel , large rotation angle glass routel, leaking proof ... service and good reputation of our companyThe Instruction of Large Rotation Angle Glass Routel :To be suitable of glass ...