Pink Polka Dots ( Blue ) Skateboard Wheels 62mm - 81A Sold in a set of 4 The Polka Dots are a centre set wheel with rounded lips will give you the ultimate control in a slide wheel. The 62mm 81a Blue Polka Dots are super predictable when getting sideways. No out of control hook ups. Predictable slides are the norm with the Polkadots. A very progressive slide wheel for the masses!