This listing is for ten custom spring blanks, each measuring approximately 5 inches in length and 3/4 inch diameter. Custom spring: pastel pink, pastel yellow, pastel green, and clear with diamond dust. You will not receive the blanks that are pictured but ones made in the same style and colors. Due to the nature of resin each batch and blank will vary. Alumilite urethane resin is formulated specifically for pen makers and woodturners. We cast all of our blanks under pressure to minimize any bubbles, but there can occasionally be a couple that remain. Bubbles can be repaired by filling with ca glue. If there is a defect with a blank we will need pictures to verify. Visit the shop for more pens and wares.