The Fieldpiece RFT6 Replacement Filter Tips and Gaskets are designed for use with the DR58 or DR82 Refrigerant Leak Detectors in order to aid in filtering out water and dust from the main unit's sensor. The narrow design of the filter tip offers easy reaching into tight spaces. Once replaced, the clean filter tip and gasket offers a greater sensor life and performance. Both the filter tip and gasket easily screw back onto the main unit for minimized downtime.