high quality corner bead 1. ... 4.wing width(mm):25x25,30x30,40x40,45x45,.. high quality corner beadMaterial: PVC, aluminum alloy, rubber, ... and stainless steel Feature: it has excellent engineering quality, construction security , Anti-corrosion, impact resistance ... do you need?2. what thickness do you need?3. what width do you need?4.what length would you like to require?5.what wing width do you need ...