CRODER® Gearmate Direct Mount chainrings for SRAM/QUARQ cranks with 8-bolt mounting compatible your existing 8-bolt spider, including SRAM AXS and Quarq power meter cranks. With good looking, siffness and light weight. It made of AL7075-T6 aluminum material by full CNC machined are not only solid, but also durable. This enables gear ratio to be changed easily and makes climbing cycling a lot more fun.