Rotary 10071. REPLACES OEM NO. 1-303527 (EXMARK) TAKES 3 BLADES FOR 52" CUT. HIGH LIFT BLADE. FITS LAZER Z UNITS. Replaces EXMARK: 1-303527, 103-1578-S, 1031578 GRAVELY: 03253800 TORO: 105-7781 Fits ModelsARIENS: 3 for 50" cutBUNTON-GOODALL: 2 for 36" cut; 3 for 52" cutENCORE: 2 for 36" cut; 3 for 52" cutEXMARK: Laser Z, Laser Z HP, Turf Tracer HP, TURF TRACER, 2 for 36" cut; 3 for 52" cutFERRIS: 2 for 36" cut; 3 for 52" cutGRAVELY: 2 for 36" cut; 3 for 52" cutGREAT DANE: 2 for 36" cut; 3 for 54" cutHUSQVARNA: 2 for 36" cut; 3 for 50"JACOBSEN: 2 for 36" cut; 3 for 52" cutJOHN DEERE: 2 for 36" cut; 3 for 52" cutLAWNBOY: 2 for 36" cut; 3 for 52" cutLESCO: 2 for 36" cut; 3 for 52" cutSCAG: 2 for 36" cut; 3 for 52" cutSNAPPER/KEES: 2 for 36" cut; 3 for 52" cut, 3 for 52" cutTORO: 2 for 36" cut; 3 for 52" cutWRIGHT: 2 for 36" cut; 3 for 52" cutYAZOO: 2 for 36" cut; 3 for 52" cut