This modern looking shower arm of 400 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 medium to large shower heads (200 - 400 mm). This modern shower arm has a square shaped pipe and a square 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.