Keiran Copper's first bi-metal yo-yo…

Please note: this yo-yo is made with genuine copper.

Over time, copper naturally develops a patina — 

a greenish or brownish surface layer that forms through exposure to air, moisture, and handling. This is a natural and often desirable feature. If you prefer to keep the original shine, you can clean it occasionally using a mix of lemon juice and salt.

diameter: 53mm 

width: 45mm 

weight: 65.4g 

gap width: 4.4mm

material: 7075 aluminium + copper

aluminium finish: tumble