Danco 36662W Poly Slip Joint Washer (20 per Bag), White, 1-1/2" Durable plastic construction 1-3/4 in. O.D. X 1-1/4 in. I.D. X 1/4 in. Thick Beveled for a sure grip and positive fit and molded in one piece from first-grade polyethylene Forms a seal which helps prevent leaks No Brass friction rings needed; easy to install