Sick of the split pin on your shimano brakes? Here's a retaining bolt to use so your pads are more secure and changing them is easier. 

Note: These are only compatible with Shimano caliper that have a thread in the casting for the bolt. The thread is located on the outboard side of the brake caliper as illustrated by the photo below. If you have the thread you can use this bolt.

Also note that these bolts also fit shimano "road" brakes (ultegra etc.). The standard bolt that comes with these brakes is slightly shorter and has a flat-head drive but these bolts also fit and it's much nicer to use a hex head bolt.