Measure your supply tube from your pump. Order this if the OD is (1/2").
NOTE: This kit does not take place of the actual part but it does provide a "work around" to keep the unit running. It may require additional parts and/or adjustments to fit your unit.
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This item fits the following models:
3-Nailer Combo Kit w/ Accessories
3-Nailer Combo Kit
1/4" x 50 Ft Noodle Air Hose with Coupler and Plug