Selling as a pair as pictured! These are new but old stock blades. Model 1023128, 8" wavy teeth is recommended for paper, fabric, rubber and geotextiles. Fits 400, 404, 420, 424, 444, & 464 models. As you can see from the photos they are sealed but some moisture has caused a bit of surface rust, hence the discounted price. I will ship the cleanest ones first as I have several available. See my other listings for more models and blade supports. Please contact me with any questions prior to purchase!