The 3r3221 roto molded waterproof utility case includes convenient 2 wide edge wheels for easy transport. These mil-standard cases were designed to meet the most demanding military specifications. They are roto-molded for strength and durability airtight and water proof with solid stainless steel latches and hinges that will withstand the most demanding shipping conditions. The 3r mil-std. Cases are molded of lldpe polyethylene impact resistand uv stabilized material and meeo or exceel mil-std 810 and mil-c-4150j specifications. The shipping cases are available with an empty interior while some models are available with cubed foam layered foam padded dividers and a pull handle with wheels. Most models without a built-in pull handle or tow handle accommodate a field installable caster kit which is sold separately. These mil-standard cases were designed to meet the most demanding military specifications. They are roto-molded for strength and durability airtight and water proof with solid stainless steel latches and hinges that will withstand the most demanding shipping conditions. The 3r mil-std. Cases are molded of lldpe polyethylene impact resistant uv stabilized material and meet or exceed mil-std 810 and mil-c-4150j specifications. The shipping cases are all available with an empty interior while some models are available with: cubed foam layered foam padded dividers and a pull handle with wheels. Most models without a built-in pull handle or tow handle accommodate a fi...