The Velino shower arm of 130 mm is brass with chrome plating is considered universal, having a standard half inch connection (13 mm). The shower arm is suitable for use with small to medium shower heads (80 - 200 mm). This traditional looking shower arm has a round shaped pipe and a round flange to cover the transition from the wall. The angle of the arm to shower head is 90 degrees. This shower arm will not affect the flow of water from your mixer tap to the shower head. This product carriers a 5 year warranty for any manufacture defects