The HydroLogic® Stealth-RO™ Double Ended Wrench is an essential tool designed for use with standard filter and membrane housings. Featuring a double-ended design, this wrench offers versatility and convenience for maintenance tasks. The large end is specifically crafted for pre-filter housing removal, while the small end is tailored for membrane housing cap removal. Whether you're replacing filters or conducting routine maintenance, this durable wrench ensures a secure grip and hassle-free operation, making it an indispensable addition to your water filtration toolkit.