1 1/4" ID x 3" OD bell flange included,17 GA,1 1/4" Brass Tubular,Fit all regular sink and faucet,all brass construction 1 1/4" ID x 3" OD bell flange included/ 17 GA,1-1/4"x1-1/4" Brass Tubular/ all brass construction/ All parts are polished and platedFinish: SN, BN, ORB, CP, PN, SBZ, ACP, ABZ