Core: Poplar, Hardwood, Tung or combined core Thickness: 15mm, 16mm, 17mm, 18mm, 22mm, 25mm Face/back: Okoume, Ash, Bintangor, Oak etc. Size: 1220 x 2440mm, 1250 x 2500mm Glue: MR, E1, E2 Grade: AAA, AA