Clauss 18490 AirShoc Titanium Non-Stick Grass Shear Replacement Blade Titanium Non-Stick blade will resist saps and adhesives. Blade is 5x harder than untreated steel and will stay sharper longer. Constructed of the finest carbon SK steel and forged to hold an edge. Blades can be replaced in seconds without the use of any tools. Treated with Microban to protect the plant and ensure a healthier cut. Works with Grass Shear No.18489