Gold-Leaf 23kt-XXX-Triple Loose-Pack of 20-books of 500-sheets, size-3-3/8" x 3-3/8", Surface/Loose Leaf, Min. 18 Gram Weight. Amazing Triple-Gold-Leaf-XXX is 20% thicker than the Double-XX-Gold-Leaf and has the least number of Pinholes of all Gold-leaves. The Triple-Gold-Leaf-XXX is the perfect gold for burnishing work. Gold-Leaf 23kt-XXX-Triple Loose-Pack is surface leaf therefore it is Loose Leaf. A packs coverage area is 39.5 square feet; each book of 25 sheets has a coverage area of 1.98sq ft. These measurement amounts for coverage do not take into consideration waste or overlap. This product is great for glass gilding and surface gilding. It is loose in the book and should be applied with a gilders tip or other method of transfer. MANUFACTURED IN THE USA! Produced by the last American Gold Beaters! Gold-Leaf 23kt-XXX-Triple Loose-Pack.