The cutting blade for SprinklerTrim comes in many different sizes (the blade need to fit the spreader model, you cannot buy one large blade and use it for all sprinklers)
Sizes and sprinkler fits:
110mm: Rain Bird 500 (552), 700 (702B, 752B)
121mm: Perrot Hydra XS, Hydra S, Hunter G70B,G75B, G35B
136mm: Hunter G80B, G85B
160mm: Rain Bird VIH 700 (702E/IC, 752E/IC)
170mm: Toro Fairway Flex 800 & Flex 35
180mm: Rain Bird 900 (900E/IC/S, 950E/IC/S) & Perrot Hydra M, Triton S
191mm: Hunter GT 800 (GT-885, G900), Toro Green Infinity 35/55