Nt Cutter Blades for Safety Carton Opener, 10-Blades per Pack, 1 Pack (BR-400P) Blades for safety carton opener (R-1200P) 12.5mm W x 37mm L x 0.60mm T Made of high quality carbon tool steel Hanging plastic case Cutting material: Plastic strapping, packages, cartons, shrink-wrap,etc. Good for cutting plastic strapping, removing staples, warehouses, factories, etc. 10ea per pack Made in Japan