Circuit Board Pen Blanks - Sierra Color:White Two 10mm brass tubes (Lower:

Two 10mm brass tubes (Lower: 1

Easy to make on a pen mandrel with 7mm tubes

comfortable feel

Parker-style refill included: Ready to use right out of the box — no separate refill purchase needed

Circuit Board Pen Blanks - Sierra Color:White Two 10mm brass tubes (Lower:Circuit Board Pen Blanks Sierra Pen Kits Elevate your writing game with these cool circuit board pen blanks, tailored for sierra twist style pen kits. This chic pen body is already prepped and tubed, so you can start turning it straight away. It's compatible with most standard sierra style twist pen kits, making it an excellent option for crafting a trendy and captivating writing tool. As with most "tube on' casts, we do not recommend using a pen