Resembling a certain trademarked blue from a popular jewelry company, this solid color blank is made using Conch Aqua pigment from our friends at Divine Island Design. It's pretty opaque but if you want, you can back paint with a neutral silver after drilling on pen kits with thinner bodies.
Slim Blanks measure about .6" x 5" and are suitable for slimlines and pretty much any pen around .5" finished diameter. Drilling on the lathe is your best bet to ensure you maximize the diameter.