<!--ProdInc[300300298]/Mall:[backcountry_US]-->Just how important is a flat-mount fixing caliper bolt? Well, we’ll only know when we need one. Luckily enough, we found out while trying to install our new flat-mount brakes onto our beefy gravel bikes chainstay. <h3>Details</h3> Mounting bolts for Shimano flat-mount disc calipers Attaches rear mounting plate to the frame Required bolt length is determined by chainstay thickness Drop down menu shows chainstay thickness, not bolt length Proper bolt length will protrude 13mm from chainstay Includes one bolt with washer Item #SHI00N1 <h3>Tech Specs</h3> Material : stainless steel Attachment Type : flat-mount Compatibility : Shimano flat-mount disc calipers Recommended Use : bike maintenance Manufacturer Warranty : 2 years