/ Unicycles (All) Standards Trials Munis Freestyles Roads Specials Parts Cranks Tires Frames Saddles Hubs Pedals Clamps Wheelsets Seat posts Safety gears Accessories Tools / Brakes Juggling Ball Juggling Club Juggling Diabolos Devil Sticks Pois Ring Juggling Cigar Boxes Carbon ISIS Spacer  Code : 20120419061446  Selling Price :  Size : Select 4mm 5mm 6mm  Manufacturer : Unicycle.com  QTY : ea Product Details     Nice to have ... Carbon spacer ! Spacer for every ISIS hub. Placed between bearing and crank..