The original nylon face was unscrewed slightly and used to punch a groove stripping the threads. Be sure to test it before use to make sure it hasn't come loose. The new one is great, just like the old one before the threads broke. If you are a carpenter, take the Thor - 712R Soft And Hard Faced Hammer. I have a wooden handle. I'm sure the plastic pen is good too, but it costs $7 or $8 more.