Authentic material! It is most suitable for 16 pcs / set premium gift billiard ball Keychain! (japan import) Registration JAN Code: 4571418242581 9.5cm diameter of ball:: 3.2cm Size: total length Weight: 35g (1 per) Qty: No. 8 ... two No. 1 - No. 15 ... each one (total of 16)