Bunton Requires 3 for 61" deckEncore Prowler Mid-Cut; Requires 3 for 61" deckFerris Requires 3 for 61" deckGreat Dane Requires 3 for 61" deckHusqvarna Requires 3 for 61" deckKees Requires 3 for 61" deckLastec Requires 3 for 61" deckLesco Requires 3 for 61" deckScag