This is the SSK SKYBEAT 31K LF in gold. Product Number: SBB1004 Material: Ultra-super duralumin (X220) Length: 83cm Diameter: 6.7cm My son used this, but is no longer using it, so I am selling it. There are scratches and dirt, but I believe it can still be used without any problems. Please check the photos. First come, first served. For those who understand that this is a used item, thank you. Shipping will be via Mercari's anonymous shipping service, with bubble wrap for safe and secure delivery.