Made from carbon steel Used for: remove layers, shape materials and light chiseling Large chisel blade gives you the ultimate precision that allows you to make a more skillful cut than your traditional chisel blade This versatile replacement blade fits with all standard light and medium duty xacto style knives, chisel blade. Used with: matte board, linoleum, foam core, plastic, cardboard, plaster cast, cork, metal, stone, wood, balsa wood, rubber, wax, clay and more Used for: model making, paper cutting, cake decorating, and polymer clay. Used by graphic artists, architects, clay artists, wood carvers, designers, hobbyists, scrapbook artists and crafters. Fits with: K1, K3, K17, K18, K26, K30, & K71 handles L – 1.500/ H – 0.350 / E - 0.350/ S – 0.250/ T – 0.020 Made in the USA