Erie Tools Lawn Mower Deck Spindle Assembly fits Toro 107-8504, Z400 Z500 Series, Z Master Commercial and Grandstand Mowers Fits Toro 107-8504 Deck Spindle Assembly Replaces Toro Z Master and Grandstand Mower Deck Spindle Assembly For all Z400 and Z500 Series Toro Mowers Fits GrandStand Mower with 48" and 52" TURBO FORCE Cutting Unit 3 Spindles Required for 48", 52" and 60" Decks