Shimano BL-M732 is a high-performance brake lever designed for mountain bikes. It features a two-finger design for improved control and comfort, and is compatible with 2-mm inner cables and 6-mm outer casings. The lever reach can be adjusted to suit different hand sizes and riding styles, and the outer adjustment bolt allows for fine-tuning of the brake pad clearance. The BL-M732 also includes a spring-force adjustment screw for centering the brake shoes and a wire fixing bolt to secure the cable in place.