Features a soft, smooth, non-sticking, super sensitive surface for marking at every point of articulation. Accurate, even in wet areas with little or no smudging. 12 sheets per book, 12 books per box. Made in USA

Sizes are as follows:

•Blue Thick Books - .0031" / 79µ
•Blue Thin Books - .0028" / 71µ
•Blue X-Thin Books - .0015" / 38µ
•Blue XX-Thin Books - .00125" / 32µ
•XXX-Thin Blue - Precisely True (finest quality) - .0009" / 25µ
•Red/ Blue Horseshoe Books - .0028" / 71µ
•Red/ Blue Standard Books - .0025" / 63µ