Fiskars Triple Track Refill Blade Carriages are designed to work with the Fiskars 12" Euro Craft Paper Trimmer, and other TripleTrack paper trimmers by Fiskars. This cutting blade will cut through up to 5 sheets of 20lb paper, or two sheets of business card/greeting cardstock. The unique TripleTrack rail design allows the blade carriage and rail to interlock, making straighter and more precise cuts. Each package includes 2 refill blade carriages.