1-1/4 in D metal strainer body Designed for heavy duty use in hotels, motels and rental properties Replaceable drip-proof Buna-N-Seal 1-1/2 to 11-1/2 in NPSM (coarse thread) 1.865 in Dia (outside thread) 11.5 TPI Sturdy 1-1/2 in SCH 40 Theft resistant chrome plated PUSH PULL® stopper