chiaogoo red lace circulars are made of high quality stainless steel. Each item is lightweight and durable, precisely machined to a satin finish with perfectly sharp points. Size is permanently laser engraved on each item for convenience and easy storage. Chiaogoo products are mainly made in Hangzhou, China, which are distributed from TROY, MI (United States) and adhere to the latest environmentally friendly manufacturing processes; Most products are 100% recyclable.