Circle aluminum slug for tube is supplied by Haomei aluminum which is a professional aluminum products manufacturer. Specifications Place of Origin: Henan, China (Mainland) Brand Name: HAOMEI Model Number: 1100 1050 1060 3003 3105 5052 Surface: Bright smooth surface Type: Cookware Sets Material: Metal Feature: Eco-Friendly, Stocked Certification: SGS Metal Type: Aluminum Alloy Packaging & Delivery Packaging Details: packed with wooden pallets or wooden case Delivery Detail: 30 days