Solid stainless steel construction, 8 in. lengths for you to enjoy rainfall shower. US and Canada output 1/2 in. thread compliant with most shower heads and 1/2 in. NPT connector into the wall.0.86-inch diameter round shower arm, 8 in. projection from wall space, 90° down outlet joint. Maximum works with 16 in. overhead shower package includes 1x L-shaped shower arm, 1x round flange. Easy to install without a professional plumber. The maximum flow rate is 10 GPM.