1.Material: high-impact engineering PP; 2.Operating Temperature: -40ºC to 98 ºC; 3.Better waterproof, shockproof and Anti-corrosion performance; 4.Filled with pre-cut foam and easy to customize compartment for your valuable tool. 5.Having a knob with O-ring for manual pressure adjustment. 6.Draw latch snaps tightly closed; It won't be broken even under higher impact. 7.Areas on the lid and back for sticking logos. 8.Widely used for hardware tools ,medical equipments, precision instruments and etc.