Spindle Specs: Height 7 1/2. Compatible with: GrandStand Mower (74558, 74568, 79558) With 48in Turbo Force Deck, GrandStand Mower (74567TE, 74559, 74569, 79559) With 52in Turbo Force. Compatible with: 48″ Z400 Toro Z Master, 48″ Z449 Toro Z Master Turbo Force, 48″ Z450 Toro Z Master Turbo Force, 48″ Z453 Toro Z Master Turbo Force, 48″ Z441 Toro Z Master Turbo Force, 48″ Toro Z. Compatible with: 52″ Z400 Toro Z Master, 52″ Z449 Toro Z Master Turbo Force, 52″ Z450 Toro Z Master Turbo Force, 52″ Z453 Toro Z Master Turbo Force, 52″ Z500 Toro Z Master, 52″ Z528 Toro Z Master. AFTERMARKET PRODUCT NOT ORIGINAL OEM PART.