Olfa Rotary Blade 28mm 2-pack. Circular rotary replacement blade for our 28mm rotary cutters used for quilting, sewing, and general crafts. Ideal for small-scale projects and tight corners. This blade is made of high quality tungsten carbide tool steel for unparalleled sharpness and superior edge retention. For Original 28mm Rotary Cutter (RTY-1/G) and Deluxe 28mm Rotary Cutter (RTY-1/DX). 2 blades per pack.