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01. How does the tool work?

02. How much power does the tool have?

03. Can I bump fire the tool?

04. How fast can I drive nails?

05. Is there a delay after pulling the trigger?

06. How do I adjust how deep nails are set?

07. Can I use the tool at high altitudes?

08. Can I use the tool in cold weather?

09. Can I use the tool in hot weather?

10. What is included with the tool?

11. Will Grex develop other cordless nailers and staplers?

12. What is the warranty on the tool?


13. Do I have to use Grex branded nails?

14. What type of nails does this tool shot?

15. Can I slight head brad nails?


16. Does the tool come with fuel cartridges?

17. Can I use other company’s fuel cells?

18. Why is there no odor like other gas tools?

19. How many shots can I get from a fuel cartridge?

20. Is less fuel used when I adjust to lower power?

21. Do the fuel cartridges have expiration dates?

22. What is the number on the bottom of the can?

23. Can I leave the fuel cartridge in the tool?

24. How should I store the fuel cartridges?

25. How do I dispose of the fuel cartridges?

Each fuel cartridge is a hermetically sealed aluminum can filled with a blend of naturally occurring compressed and liquefied hydrocarbon gases. Under US EPA regulations, the contents of the fuel cartridge are classified as ignitable hazardous wastes identified with number D001 and are therefore subject to the Resource Conservation and Recovery Act (RCRA). Fuel cartridges used in or by commercial or industrial facilities must therefore collect, manage and properly dispose of fuel cartridges according to all federal, state and local regulations.

However, if the used fuel cartridges are generated by a residential household, they are excluded from the definition of hazardous waste in accordance to 40 CFR 261.4(b)(1). Therefore, the used fuel cartridges generated by households can usually be disposed as general refuse in a properly permitted municipal landfill. Users are still advised to contact their local waste authorities for proper disposal procedures.

In most cases, if the fuel cartridge is empty, it can be recycled or disposed as nonhazardous waste. In accordance with the EPA's definition of an empty container under 40 CFR 261.7, the fuel cartridge is empty if the internal pressure of the container is equal to atmospheric pressure.

GREX takes no responsibility for proper fuel cartridge disposal. Proper disposal remains the responsibility of sellers and users of the fuel cartridges. All sellers and users are advised to contact their local solid waste authority to determine if any federal, state or local regulations prohibit or restricts disposal.

For more information about US EPA hazardous waste regulations, visit the official websites at:


26. Is the Fuel cartridge recyclable?


27. How can the tool only use AAA batteries?

28. Why not use AA batteries?

29. Does the tool come with batteries?

30. Can I use rechargable batteries?

31. How many shots can I get from a set of batteries?


32. What kind of maintenance is involved?

33. Why don’t I need to clean the tool regularly like other gas nailers?