Complete your faucet installation with the Kohler clicker drain. This pop-up drain features a brass tail piece and a 1-1/4" connection. Kohler® Pop-Up Clicker Drain, 1-1/4 in Nominal, Solid Brass Drain, Vibrant® Titanium, 2-1/8 in L x 2-1/8 in W x 8-15/16 in H Dimensions