Upgrade your Shimano 105 ST - R7020 hydraulic brake system with this high - quality bleed screw and O - ring. Ideal for replacement and repair jobs, ensuring smooth braking performance.


To use this Shimano 105 ST - R7020 bleed screw and O - ring, first, make sure your brake system is clean. Remove the old bleed screw and O - ring carefully. Then, install the new ones gently. Tighten the bleed screw properly, but don't over - tighten it. When using, check the brake performance regularly. For maintenance, keep the parts clean and dry. If you notice any leakage or abnormal braking, replace the parts promptly.