A-dec Syringe Buttons & Repair Kit Kit includes: PN 9186 Syringe Button. 2 ea. PN 9028 Syringe Button Spring, 2 ea. PN 2242 Syringe Tip Adapter O-Ring, 2 ea. PN 2305 Syringe Tip O-Ring, 1 ea. PN 9150 Syringe Button Screw, 1 ea. **Note: This item does not contain a wrench.