This mat is designed specifically for keeping your workbench clean and organized while you work on your bike. The mat has an extra large work area compartments for parts tools and components so everything is within reach and easy to find. Plus the mat has useful tools built in like metric and imperial rulers ball bearing and sealed bearing gauges which make it easier to identify the parts you need when working on your bike.Built in gauge to easily and accurately identify outside and inside diameter of sealed bearingsIdentifying ball bearing has never been easier with this ramped gauge that lets ball bearings roll into their identifying slotConvenient metric and imperial ruler to quickly measure componentsDurable rubber-like PVC construction cleans easilyOverall size 20x12-3/4" 12x9.5" raised work area