Hight Quality:The thread is deep and clear without burr, high quality carbon steel forging, fastening effect is better.Standard cross slot, uniform force,easy to lock, not easy to slip, more convenient and quick to use. Type: 18 kinds of self-tapping small screws assortment kit, effect,easy to operate, free a screwdriversaving time and effort. Non-slip screws for locking, you can lock directly into the wood or thin iron material, high strength, can be directly beat, no deformation, not easy to break. Widely Application Micro Mini Screw is widely used computers,phones,watches,glasses,electronics, electrical appliances, furniture, toys, automobiles or anything else repair that requires small screws. With Strong Box :This Screws Nuts Set is well packed and assorted in a plastic box, worry free about damage or disorder. The box design is nice and easy to take right screw out.