Home Depot sells a sharpener that’s large enough to use on these pencils. I buy the pencils in the multi pack I think there are 10 or 12 pencils in the pack and it comes with the sharpener. My contractor is always losing his pencil and he’s always asking me if I have one so I just started to stock up and I’m prepared now for him!
The length of this pencil is approximately 7.5in.
Use a utility knife to sharpen it.
The diameter of the pencil not sharpened is 11/32 in. (Just under 3/8 in.)