The Shimano SB-BH59 Olive/Insert Unit is designed to ensure a secure and reliable connection within Shimano hydraulic brake systems. Perfect for maintenance and upgrades, this unit is a vital part of keeping your braking system in peak condition. Secure and Leak-Free Connection: This unit includes a brass olive and insert pin, providing a secure and leak-free hydraulic connection between the brake hose and the brake lever or caliper. It ensures consistent hydraulic pressure for optimal braking performance. Compatible with Shimano Brake Hoses: The SB-BH59 Olive/Insert Unit is compatible with Shimano brake hoses such as SM-BH59, SM-BH59-JK, and other models in the series. Its precise design ensures seamless integration for a flawless braking experience. Durable and Long-Lasting: Crafted from high-quality brass, the olive and insert pin are resistant to wear and corrosion, ensuring durability over time. This robust construction makes it suitable for demanding riding conditions and frequent maintenance. Whether you're replacing a worn-out component or performing routine maintenance, the Shimano SB-BH59 Olive/Insert Unit is an essential addition to your toolkit.