The ECC90738EU Universal Parts Box set from Proskit is a box of versatile and high quality stainless steel components for electronic systems. The parts are organized in a stackable form, making it easier to arrange components when engaged in repair and maintenance activities. The components have been rated RoHS compliant, indicating they have passed safety and environmental tests. The parts box includes precision components like tweezers, needles and pins, allen keys, spring clips, and probes and have been designed to work on a variety of electronic systems.