Metal Magnetic Abrasion Resistance Chemical Resistance Rust Resistance Sparking/Non-Sparking Available Clipper Sizes Galvanized Yes Good Poor Good Sparking 25, 1, 2-7 Coated Steel Yes Good Poor Poor Sparking U2-U3 Steel Yes Good  Poor  Poor Sparking  U4-U7 High Tensile Steel Yes Good To Excellent Fair Good Sparking 1,2-7 Rectangular High Tensile...