SKB 3I Series Injection Molded Mil-Standard Waterproof Cases are molded of ultra high-strength polypropylene copolymer resin, featuring a gasketed, water and dust tight, submersible design (MIL-C-4150J) that is resistant to corrosion and impact damage. Features a molded-in hinge, patent pending "trigger release" latch system, comfortable, snap-down rubber over-molded cushion grip handle, automatic ambient pressure equalization valve (MIL-STD-648C), resistance to UV, solvents, corrosion, fungus and impact damage (MIL-STD-810F).SKB''s new 3i-PMCK Panel Mount Clip Kit is now available and will accommodate any size 3i Series case. The 3i-PMCK Panel Mount Clip Kit will secure a mounting panel of your choice for a convenient and finished appearance.The 3i-PMCK kit is complete with 8 panel mounts that have pressed in brass inserts, O-ring seals, mounting screws, a drill guide and even the necessary drill bit for a quick and easy installation.