Like all SENSEI Deluxe models, the REV Ultimate Curved shears feature Japanese Molybdenum alloy blades that are Cryogenically Tempered for long lasting durability. They also have a state of the art Ball Bearing tension system which will extend the life of the shear as well as Polymer lined pivots that will keep them feeling like new for years. The sword blade provides extra durability and strength for thicker coats.