... 1) A6, A5, A4, B6, B5 ... 2) PP cover, hard cover, papercard cover... 3) Spiral binding, glue binding, sewing binding...4) Arabic ... ruling, English ruling, Square ruling...Model 6: PP-NB100Description: PP Cover notebook, Double spiral, A5 size, 100sheetsSupply all kinds ... 1) A6, A5, A4, B6, B5 ... 2) PP cover, hard cover, papercard cover... 3) Spiral binding, glue binding, sewing binding...4) ...