Hayward CAX-UCCP201-1 Peri Pump Tube Replacement for Select Hayward Cat 1000 Monitors, Set of 2 Peri pump tube replacement Fits hayward cat 1000 automated controller monitor models cat-1000-orp, cat-1000-orp-ul, cat-1000-ph, cat-1000-ph-ul, cat-1000-ptc Also fits hayward cat 1000 automated controller monitor models cat-1000-ptc-ul, cat-1000orpptc, cat1000orpptcul Weighs 1 pounds Two per pack