This is a Package of 3 Lawn Mower Blades Brand: Rotary Corporation Length: 18" Center Hole: 1/2" Lift: Standard Replaces Toro: 27-0990, 270990-03 For Use With: Toro Groundsmaster Units, including Walk Behinds, and the Time Cutter Zero Turn Models: 112-5000 112-5004 30111 30116 30319 30342 30441 74701 74801 78294 78370