ECS-3X8 ECS-3X8/ECS-.327-12.5-8 ECS-3X8X EC-S4 ECS-40.3-18-5PXEN ECS-40.3-18-5PXEN-TR ECS-40.3-20-1 ECS-40.3-20-1X ECS-40.3-20-4 ECS-40.3-20-4-ADN