Home Master ISet-TMUL-MY12 Ultra Filter Change Set, Fits 2012 + ULTRA Fits Tap Master Ultra RO system Uses modular filters where the filter element and housing are all-in-one assembly for quick and easy annual filter changes - no wrenches required IRON filter KDF85/ catalytic carbon pre-filter removes chloramines and protects the RO membrane from iron Easy to install, no wrenches necessary 1/4 in. quick connect fittings on sediment and iron pre-filters. 3/8-inch quick connect fittings on post filter