Espagnolette rod gear rod transmission gear 1.Material: zinc, aluminium 2.Suit for most construction profile 3.Size:20cm mushroom Espagnolette rod transmission gear1. Material: Zinc, Iron or stainless steel 2. Surface treatment: electroplate 3. European standard 4. Suitable for most kind of Construction profiles 5. Rich experience in OEM program, which is supported by powerful R&D department.Own ...