The Reverse Components Ultralight Headset Spacer kit lets you add some color to your bike while you save weight. Features: Lighter than conventional carbon spacers Fits 1-1/8"" steerers only Made from aluminum Specifications: S.H.I.S. Stem Clamp Diameter: 28.6mm (1-1/8") Material: Aluminum Weight: 2.6g (5mm), 4.7g (10mm) Color: Green Includes: 5mm Spacer (2) 10mm Spacer (2) Like this color? Check out our entire selection of Reverse Components Green Products.