Excel Blades - #21 Stainless Steel Replacement Blade Made from Stainless Steel This versatile replacement blade fits with all standard light and medium duty handles Used with: cuts on paper, card-stock, stencils, film, photographs, tape, plastic, cork, wood, vinyl, cloth, leather, cardboard, foam boards and most other light-weight crafting. Used for: model making, paper cutting, cake decorating, cricut vinyl cutting and polymere clay. Used by graphic artists, architects, car wrappers, designers, hobbyists, scrapbook artists and crafters. Fits with: K1, K3, K17, K18, K26, K30, & K71 handles