Purchased for 500 grams. I did not grow up to 500 g by myself, I thought that it was keeping the winding state. However, this "500 g" is an allowable load of the "cord" being wound, which means that it is a tool to prevent falling to the last. It was necessary to investigate the structure of the product itself and the concept firmly. However, since this item is very "lightweight", we can absolutely recommend it to craftsmen who understand the characteristics of the product and use it.