Hayward SPX1250Z4 Pump Strainer Cover Knob Replacement for Hayward Max-Flo Pump Series Pump strainer cover knob replacement Fits hayward max-flo sp1800x pump series models sp1800x5, sp1805x7, sp1807x10, sp1808x10, sp1810x15, sp1811x15 Also fits hayward max-flo sp2800x pump series models sp2800x5, sp2805x7, sp2807x10, sp2810x15, sp2815x20, sp2810x152 Weighs 10-Pound