i recently had it demonstrated to me just how strong the belt on my lazer 52 really is. almost phenominal [sp] to me. just got my curiosity up. do the 72 inch decks an such, use one major drive belt. or do they use 2. seems like doubles would really take a super belt. on a 60 or 72. i know the lazer is one belt, as far as i know.but was wondering about the others ,and how long your belts can last. yaw have a good day. drizzleing here.