Our premium wok brass pan is a handcraft of "BangkokBrass" (บ้านทองเหลือง) leader of brassware of Thailand Not coated by harmful substances, no residue, ensure for safety hot sensitivity, consistent and durable. Because of great heat control, it's suitable for cooking or serving savory dishes, stewed tamers, fried curry, fried Thai desserts, roasted coffee beans. Size: Standard 12" ; Weight: 2.4lbs and 8" Weight: 0.85lb. Note: Due to the handmade, no two are exactly alike. Yours will vary slightly size. Brass material could have black stain naturally if you don't use it that often but it could be cleaned up as well.