About This Standard Size Welding Coupons: The Certiweld Supplies TIG welding accessories are designed to provide uniformity in welding instruction, testing, and practice for MIG, TIG, and stick welding procedures, being incredibly versatile. 3 Different Materials: Our welding coupons are available in 3 material options including steel, stainless steel, and aluminum to meet your various welding or instructional needs. Compatible with Most Welding Methods: These welding accessories are suitable for MIG, TIG, and stick welding, making them useful for a wide variety of skill levels and applications. Endless Possibilities: The Certiweld Supplies welding kit with coupons is suitable for workshops, classrooms, and DIY use. A practical alternative for aspiring welders, instructors, and DIY home-based projects. Quality You Can Trust: This welding and cutting sheet metal is made in the USA with highest grade materials, being rust-resistant and precisely packaged to assure quality from shipping to storage. Overview Material : Stainless steel Brand : CERTIWELD SUPPLIES QUALITY YOU CAN TRUST Item dimensions L x W x H : 4 x 2 x 0.13 inches Color : Silver Shape : Rectangular