Lyfstyle Replacement M1 Straight Blades for the SafeCut Rotary Paper Cutter and Trimmer Model 959 (Pack of 2 Blade Cartridges) THREE BLADES STYLES ARE AVAILABLE - M1 Straight / M2 Perforated / M3 Wavy RAZOR SHARP STAINLESS STEEL BLADES For Straight Crisp Cuts SAFECUT BLADE DESIGN - Blades Are Completely Enclosed In Cartridges For Safe Handling And safe Use TWIN PACK Is Both Economical And Convenient - Saves Money And Reordering Time BLADE CARTRIDGES Fit Securely In Cutter, Then Are Conveniently Stored In The Compartment Located On The Cutter