The BRK-1 was designed around our BX-3 Rolling Big Blue Box, a professional-grade toolbox for the professional bike mechanic. When open, the BX-3 is a neatly-organized display of your tool collection, featuring dual-sided pallets with hundreds of custom-designed loops and pockets. The BX-3 has room to grow your tool collection even when fully loaded with the contents of the BRK-1. When closed, the BX-3 is built for travel, with a tough weather-resistant outer shell, integrated wheels and an extendable handle.