Its 3” blade depth and reversable 20” concave disc work together to quickly eliminate ridging. Debris is spiraled into the infield for fast and easy clean up. The standard equipment with the Diamond Edger/Kurb Dresser is a disc cleaner – to clean off debris while moving – storage/stand legs, offset weight bar frame and adjustable guide shoe. This solicitation is for the discs/hub, not the entire machine. Diamond Edger/Kurb Dresser Cutter Discs Model# 15418; Diamond Edger/Kurb Dresser Hub Model# 15417; Hook-Up; Three-point hitch, category 1 & 2; 20 Horsepower minimum; Standard Equipment; Disc cleaner/scraper; Storage stand legs; Offset weight bar frame; Adjustable edge "Guide Shoe"; Blade Depth and Width; 3-inch depth; Reversible concave disc has a 20-inch diameter