QualityParts From Oregon That you can depend on. Replaces MTD part number 784-5038B: Use on 1988 and 1989 20" and 26" snow throwers, models 225 and 590; 7/16" x 2" slots, center to center spacing; Will also fit Toro large frame snowblowers; For MTD use with our 73-024 wear bar; ; Oregon Equipment Parts 73-020 Skid Snowblower Mtd[780]