The ring is attached via 3 bolts on the back side of the spider near the spindle

however they work with Shimano Direct Mount chainrings only

Palm: 47% Polyethylene

Materials / construction: This chain comes in two options

Raised rear allows for a better grip in the saddle as well as better power transmission

Hope Pro 4 Front 6 Bolt Disc Hub - 15x110mm Boost - 32 Hole - Black Ignore Wholesale Tier 2 Brand Rule The ring is attached viaThe Pro 4 is an incredibly versatile and easily serviceable hub that builds upon Hope's reputation for bulletproof quality and attention to detail. The hubs are machined from a single billet of 2014 T6 aluminium and run on stainless steel sealed cartridge bearings for smooth running and outstanding reliability. Specs: 15mm axle. Sealed stainless steel cartridge bearings. Hub shell machined from forged aluminium billet. Standard 6 bolt disc fitting.