Its a bird, its a plane.. No it's a UFO by Slime Balls

Slime Balls are known for their spinney things, so here's another one, but different...

Spec's

Does it Fly: If you throw it
Does it Roll: If you roll it
Is it a UFO: To someone who doesn't know what it is
Diameter: 25.3cm (9.96") 
Depth: 2cm (0.8")

Slime Balls

Founded during the 80s heyday of skateboarding, Slime Balls dares fans to stand out in the crowd with the loudest wheel graphics and brightest apparel.