1.design by buyer's requests 2.use in ... metersPunchesOver 130 setsExperienceOver ten years experience in metal stamping parts.MaterialStainless steel, iron ,aluminum alloy, copper, brass ... 2008. RoHSApplicationtemperature controller, mutual inductor, transformers,relay, sound ,car GPS ,Car chargers, etc.Coatingnickel, zinc, Chrome, gold, tin, ... small precision stainless steel metal stamping & car parts