I am using it for the chain length adjustment of a single speed bicycle. It is reasonably more than half-frame link which is sold for bicycle. Although it is easy to rust on the surface unless maintenance is frequently done, there are no problems at all under my use conditions.
Although there is no problem in quality, two sets of pins and split pins are required for the purpose of using this product. However, the product is sold as a set (top, pin, split pins each). Since I bought extra this time, I removed the pin and split pin from other set and used it this time. The composition of the daughter parts of this product does not match the application.