Shimano SB-MJ05 is a cantilever brake designed for precise and reliable bicycle braking. It features a lightweight and durable construction, making it suitable for various riding conditions. The brake's unit link alignment type enables easy and secure installation, while the adjustable spring tension allows for customization to suit different riding styles and terrains. The SB-MJ05 is compatible with handlebar grips with a maximum outer diameter of 29 mm and can be used with various Shimano brake levers, including the ST-MJ05, BL-MJ05, and SB-MJ05 models.