New old stock, never used MTD mulch blade kit. No box or instructions, I don’t know the part number of it. I bought it through Craigslist 10-15 years ago intending to buy an MTD 30” rear engine rider just to see how well it cut but that’s not going to happen. I also have ads in the Minneapolis Minnesota Craigslist. Includes blade as shown and block off plate. I have two videos of it on YouTube on my “Boyd The Goofball” channel. Stillwater Minnesota is 25 miles northeast of downtown Saint Paul Minnesota. My zip code is 55082. $50 firm. Years ago these were over $100 new. I have more pictures of it in my Craigslist ad. Doesn’t fit Murray mowers, just MTD and other brands made by MTD. If anyone knows the part number please post it.