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Fluid Control Systems & Products - Flow-Rite
Battery Watering Technologies 09FUV6 - Male Connector For FLowrite FIll Links with BWT Watering Kits (Standard Battery)
Amazon.com: Male Connector for Battery Watering Systems | Dust Cap Included | Compatible with Blue connectors on Watering Device : Industrial & Scientific
Batteries Natech
Amazon.com: Battery Watering Technologies Direct Fill Link (Flow-Rite) with 20' Hose and Strainer (DFHOSE-STF) : Patio, Lawn & Garden