The 3M head/bracket assembly, 560 series is used in filtration systems comprising of replacement cartridges of the 8000 series. The 3M head/bracket assembly, 560 series is used in filtration systems comprising of replacement cartridges of the 8000 series. 3M water filtration products systems and cartridges offer a wide range of solutions designed to address many types of water quality concerns. Third party certifications, such as NSF and WQA, are an advantage provided on many 3M water filtration Products. 3M purification is a known leader in filtration technology recognized for innovation, trust and quality around the world.