Wolf Tooth's single speed spacer kits are compatible with Shimano HG type 10 or 11-speed freehub bodies and provides riders with the ability to adjust their chainline as needed.Kit includes: (2) 1.5mm, (3) 5mm, and (1) 15mm aluminum spacersCrafted with premium 7075-T6 aluminum for strength and light weightItem weight: 21gCompatible with any 10 or 11-speed HG freehub bodySpacers can be used in combination to achieve 45, 47.5, 49, 52, and 55mm chainlinesMade in the USAItem SpecificationsCassette Body TypeShimano HGDefined ColorBlackMaterialAluminum Wolf Tooth Single Speed Spacer Kit Driver and Single Cog UPC: 812719029421