Standard 1/2" BSP thread. WRAS approved. 100% genuine WaterMark Ceramic cartridge. Washer-less technology meaning you will never again need to change another washer. Smooth Engineering gives precise movement of the handle. Easy-to-follow installation instructions included. Maximum water pressure for this wall mixer is 1,000 kPa. Tiger Bronze is made with anti-fingerprint technology. Please note, this product may have a visible Meir or Watermark logo.