The Zip Zinger is a one-off prototype yo-yo produced by Anti-Yo. It is made of titanium, but the manufacturing process is not something so commonly seen in other metal yo-yos; metal injection molding (MIM). A slurry of powdered titanium and an inert binder is mixed together, and then injected into a CNC-milled mold and baked in a kiln. The binder is burned away in the kiln, leaving behind solid titanium.