JRCO Model 751 Hooker Aerator 38" (751.JRC) Electric Lift - Mount Bar Not IncludedJRCO Model 751 Hooker Aerator 38" (751. JRC) Electric Lift Mount Bar Not Included The JRCO Hooker Aerator is designed for the lawn care professional. It saves time and labor with high production aeration. Aerate 66,000 square feet per hour at 5 mph. The 38 inch wide Hooker Aerator punctures up to six holes per square foot. Holes are approximately 1 2" wide by 1 1 4" long and up to 3" deep. Tines pierce deep into the soil, hooking and lifting loose