Our Entrapption Stars have two bore options, making them viable parts for both FRC and FTC! This product is frequently used as intake wheels for picking up game pieces. Made from rubber, they are flexible, yet firm, allowing for the ability to pick up objects of irregular shape.
The 1/2 in. Hex Bore option is designed to be an interference fit on any 0.5 in. Hex Shaft.  This means the bore is actually 0.425 in. and it will be a tight press on, but keep the entrapption star from rotating.
The Nub Bore is our most common FIRST Tech Challenge Bore.