The OLFA 45mm Endurance(TM) Rotary Blade cuts twice as long as standard OLFA rotary blades and fits all OLFA 45mm rotary cutter handles. Made from the highest-quality tungsten steel, Endurance(TM) blades are manufactured with an exclusive metal hardening process that delivers two times the cut life. More cuts with fewer blade changes. Cut up to 8 layers of cotton fabric. This package contains one 45mm rotary blade and storage case. RB45H-1, 1128127. Imported.