40 Sheets Watercolor Swatch Cards Color Swatch Binder Inner Color Chart Template Cards Spiral-Bound 3.5 X 7 Inch Fits A6 Circular Aperture Color Matching for Gouache Oil Pastels

["【40 Blank Watercolor Swatch Cards — Refill for Your Binder】40 blank-format watercolor swatch cards (7\" x 3.5\" each) with boxes and center-cut holes for precise color matching. Fits any standard 6-ring A6 color swatch binder.","【Premium 300gsm Watercolor Paper】Thick 300gsm double-sided paper (single-side printing) handles watercolor, gouache, acrylic inks, and colored pencils—no bleeding or buckling.","【6-Hole Punched for Easy Rearrangement】Pre-punched with 6 holes, compatible with A6 6-ring binders. Easily reorder pages by brand, palette, or project in your color diary.","【Box-with-Center-Hole Layout for Quick Matching】Place paint samples directly over the center-cut holes for instant color matching. Build a clean, consistent color chart card library.","【Versatile Refill for All Artists】Perfect for beginners or pros. Use in studio, classroom, or plein-air. Expand your painters color diary swatch card collection anytime."]