Danco 86786 Slip Joint Nut and Washer, Plastic, White Durable plastic construction Includes (1) washer: 1-3/4 in. O.D. X 1-1/4 in. I.D. X 1/4 in. Thick Includes (1) Nut: 1-1/2 in. X 1-1/2 in. Beveled for a sure grip and positive fit Forms a seal which helps prevent leaks No brass friction rings needed; easy to install Moled in one piece from first-grade Polyethylene