This listing is for a taped polypro Gyro Hoop - a flow toy that consists of two concentric hoops, the smaller of which spins on its axis. 
 
These are only available in 3/4 polypro, and I measure them by the outside diameter of the largest hoop. The smaller hoop contains a 1/2 ounce weight to encourage it to spin when you move the larger hoop, and is attached to it with split rings and fishing swivels. 

Please let me know the tape you would like in the notes to seller - you can have any of the tapes listed in the "polypro: one tape" section of my shop. 

Please also let me know what colour grip trim you would like. You can choose between black, white, purple, fluorescent pink, fluorescent green, fluorescent orange and fluorescent yellow.