Sink Drain, 1" Nps Drain, 2" Flange, 1-1/2" Long, 1-3/8" Sink Opening, Brass, Comes With Washer & Locknut0.96" Inside Dia. Drain Opening, Replaces parts for: Component Hardware Group, for models: E16-4010-LW; E16-4010; E16-4010LW; Standard Keil, for models: 1816-1411-3301; 1816-1410-1351