500pcs carbon steel universal with box lapscrews set replacement repair tool

made of durable carbon steel material, high strength, no deformation, not easy to break. sharp tip, self - attack effect,easy to operate, saving time and effort. this screws nuts set is well packed and assorted in a plastic box, worry about damage or disorder. the box design is nice and easy to take right screw out. widely used for computers,phones,watches,glasses,electronics, electrical appliances, automobiles or anything else repair that requires smal