Model 6455 is a polished chrome-plated brass flat waste strainer with grid, washer locknut and slip joint tailpiece. Flange diameter 4-1/2" (11.4 cm) fits 3-1/2" to 4" (8.9 to 10.2 cm) drain holes; 1/1-2" O.D. (3.8) slip joint tailpiece is 4" (10.2 cm) long