Non-Marring PVC Mat is a great addition to your workbench. Exterior dimensions allow mat to perfectly insert into the top of the Brownells Gen III Armorers Case. Light gray color allows for writing on the surface, so you can mark measurements or trays for specific uses*. Three trays at the top allow for quick placement of screws, bits, pins and other small items, and the rounded edges will prevent anything from rolling off the sides. Mat easily rolls up for storage. Dense Silicon material allows for bench blocks to be utilized on the top of the mat. Material holds up against solvents and oils. *Surface does not allow for erasing. Writing will be permanent as the material will absorb Mfg: Brownells