Shimano BR-M351 is a cantilever brake designed for use with a center wire. It features a spring-force adjustment screw for fine-tuning the centering of the brake shoes, and an adjustment washer for aligning the brake shoes to the rim. The brake shoes can be adjusted to provide a parallel fit with the rim surface, and the wire fixing nut can be used to adjust the tension of the center wire. The brake also includes a hook link and fixed link for attaching the center wire.