These non-slip parts trays are used by military and civilian small arms armorers to keep all those pins and parts from rolling off the work bench and getting lost. 
Avionics technicians also use them to those tiny screws from magically disapearing.
Features non-slip (inverse golf ball pattern) Silicone rubber tray holds small parts while maintaining a clean work space.
High semi-rigid walls prevent pins from rolling off the tray surface
 
Colors: High Visibility Zombie Green / International Orange / Battleship Gray
Weight : 3.6 Ounces 
Dimensions Internal: 5 5/8ths X 3  5/8ths
Dimensions External: 6” X 4”  X 15/32”
Material: Heat Resistant Silicone Rubber
Properties: Non-Magnetic, Anti-static, Flame/Heat Resistant, Solvent Resistant.
NSN Pending
Got it dirty, dusty, oily, greasy? No problem! Wash it down with a little soap and water and you are back good-to-go.