These are required if your frame or fork has an IS mount and to fit your caliper and/or adjust your rotor size

What's included:  Combo screwdriver

Chainring: 4 bolt

Materials: High carbon tool steel

so not only will it keep you protected

Hope Pro 5 Front Centrelock 15x110mm Disc Hub - Front - 15x110mm Boost - Centrelock - 32 Hole - J-Bend - Orange Ignore Wholesale Tier 1 Brand Rule These are required if yourBuilding on Hopes 30+ years of manufacturing hubs, the Pro 5 is the combination of all their experience into a product to meet and exceed the demands of current and future bike technology. Features: Sealed stainless Steel cartridge bearings Hub shell machined from forged aluminium billet Standard 6 bolt disc fitting Larger spoke flange to enable stiffer wheel builds Unsurpassed reliability Available in both standard 15mm, 20mm and Torq end cap options