Includes 2 flanges, gasket, nuts and bolts. 1-1/2" bronze flanges for 100bnfi, lr, nbf, prab, pl-30b, pl-36b & pl-55b It's a complete installation kit, providing everything you need to equip your system with 1-1/2" bronze flanges compatible with 100bnfi, lr, nbf, prab, pl-30b, pl-36b & pl-55b models.