The 3-notch linoleum blades come 5 per card and fit all knives.; ; Brand Name: Allway Material: Steel Blade Type: Hook Product Type: Replacement Blade Blade Length: 2-1/8 in. Number in Package: 5 pk Color: Silver Packaging Type: Carded Knife Type: Linoleum Knife Blade Thickness: 0.025 in. thick Hand buffed, deep hook blades Fits all knives