The General Pump 520122 is a replacement 1/4" hose barb for chemical injectors. Compatible with stainless steel injector models 100336, 100835, 100334, 100333, and 100339. The barb is constructed with stainless steel to endure corrosive chemicals and environments. A genuine OEM part that ensures a proper fit, material compatibility, and functionality when installed on the proper injectors.