Frame wiper blade 1. Character 1) Connector: stainless steel nail, rustproof and corrupt-proof. 2) Rubber bar connection: stainless still thread, distortion-proof 3) Rubber bar: A grade rubber bar, graphitizing, ossify proof. 4) Plastic of accessory: Nylon 66, aging-proof5) Surface dealing: With electrophoretic painting, excellent corrupt-proof ability6) Frame: Cold Steel 1.0mm2. Main Parameter:12'' 13'' 14'' 15'' 16'' 17'' 18'' 19'' 20''21"22"24"etc.