THIS KIT INCLUDES ONE BELT AND THREE BLADES. THE BELT REPLACES 539 11 45-57, 114557. BELT SPECS: LENGTH 154" WIDTH 5/8" BELT APPLICATION: DECK. THE BLADES REPLACE 187256, 187254 32 18 72-5, 532 18 72-56, 539 11 20-53, 777 18 72-56, 95-605, 595-605, 95-072, 11180, B1EP1050, AND 302-430. BLADE SPECS: LENGTH: 18 1/2 ", CENTER HOLE: 5 PT. STAR, WIDTH: 2 1/2 ", THICKNESS: .187 " FITS MODELS LSZ4622, LSZ5422, LSZ5424, MZ5225, RZ4219, RZ4619, RZ4620, RZ5422 AND RZ5424 WITH 52" AND 54" DECK.Warning:Lead-Nickel-Cancer and Reproductive Harm