NITTO aluminum column spacer finished with high precision. In addition to the beautiful 'Stealth Gray' anodized finish, the wall thickness is made as thin as possible so that it fits uniformly with Simworks' line-up of chromoly stems. SPECIFICATIONS - Material: Aluminum - Corresponding column size: 1-1/8 " - Outer diameter: 31.8mm (1-1/8") - Weight: 2g (6mm), 4g (10mm), - Height: 6mm, 10mm