The art of bleeding brake fluid from your Shimano hydraulic disc brakes can seem intimidating, but with the right tools, it's a task that's easier than you think. To get started, locate the small hose or tube that connects to the brake master cylinder, usually found on the bottom of the brake caliper.

Next, attach the 120ml mineral oil brake fluid reservoir to the end of this hose, making sure not to spill any around the brake caliper's internal components. Now it's time to bleed the system by opening the lever and allowing the fluid to flow out through the hose into a drain pan or a large container.

As you continue to bleed, listen for any hissing sounds and adjust the valve stem as needed to achieve the correct pressure. It may take some practice to get the system just right, but with patience and persistence, you'll be able to keep your brakes in top condition. The BIBOKLTIY Brake Bleed Kit is designed specifically for Shimano hydraulic disc bikes, making it a convenient solution for any DIY enthusiast or mechanic looking to upgrade their brake system.