These new blades are nothing short of revolutionary. The tungsten alloy core of these blades is coated with Titanium Nitride, a bright golden ceramic coating applied by the physical vapour deposition (PVD) process at 500 degrees Celsius. The result is a blade surface that has high harness and low friction creating a superior blade that outlasts standard blades by 4-5 times. This makes these Titanium blades both economical and convenient. They are ideal for rotary cutting all types of fabrics. This 45mm blade will fit on to all standard 45mm rotary cutter brands. Try them today! You won’t go back to normal blades ever again!