Each small mystery box (3¾”×3¼”×4⅜”) holds 20 half-blanks — two half-blanks per pen, enough for 10 slimline pens. Drawn from a 50+ species inventory. Five boxes numbered 1–5, each with a different mix. Kits not included. No shipping charge. See product images for size comparison with the Long Mystery Box. $8 each.

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