Bathroom Sink Decorative Round Bottle Trap - BT-1011. 25" inlet and outlet size: Designed to fit standard 1. 25" diameter plumbing pipes for both the inlet and outlet, providing a secure and seamless connection. Round bottle trap design: The sleek and compact design not only enhances the visual appeal of the sink area but also efficiently traps debris and prevents unpleasant odors from escaping. Solid brass construction: Crafted with high quality brass material for exceptional durability and