GEO SRAM Narrow Wide Chainring - Direct Mount - 3mm Offset Works Components SRAM 3-bolt direct mount GEO round chainring - engineered to work with T-Type and Non T-Type 10-12spd chains. Precision CNC-machined in the UK using our distinctive GEO design, crafted from aerospace-grade 7075-T6 aluminium for a unique and premium finish.Its narrow-wide tooth profile ensures excellent chain retention, making it ideal riders seeking long-lasting performance and drivetrain efficiency.