Do it Best 1-1/2 in. ABS Decorative Polished Chrome P-Trap with 1-1/4 in. Reducer WasherDo it Best 1 1 2 in. ABS Decorative P Trap in Polished Chrome with 1 1 4 in. Reducer Washer. Decorative P Traps are designed to prevent sewer gas from escaping from a plumbing fixture or drain. The ABS material is lightweight yet durable, easy to install and safe to handle. It fits a 1 1 2 in. inlet and a 1 1 2 in outlet. An included reducer washer also allows for use with a 1 1 4 in. tailpiece. Available in trending finishes, these decorative P traps