The most impressive feature of XD-15 ceramic-hybrid bearings is

Comes In 3 sizes to suit different diameter tubes

heat-treated alloy

5hrs (Daytime HyperConstant mode 1100/400 lumens)

Finish: Fine shot peen

Shimano GRX ST-RX820 12 Speed Shifter/Disc Brake Lever Only - Lever Assembly - Black PLP|Riding Style The most impressive feature ofThe Shimano GRX ST RX820 12 Speed Shifter Brake Lever is tailored for riders seeking precise shifting with enhanced braking on rugged terrain. Built for gravel specific demands, it combines a 12 speed shifter with a hydraulic disc brake lever, ensuring smooth gear transitions and confident braking control. Precision Shifting: 12 speed for accurate gear changes Powerful Braking: Hydraulic disc brakes for reliable stopping power Position: Right lever