I use a DURABLE ID holder for many years and for a key KEY-BAK. Both are high-quality brand in this area, which is urging plenty of cheap scrap. From experience I can tell you who buys cheap here, definitely buy twice. Especially the automatic belt feeder is a vulnerable system. My DURABLE clip has for years lost no no spring tension and it is used on the day countless times. The brand stands for quality. Anyone wanting to use such a highly practical system for heavy keyrings, should times look KEY-BAK.