JRCO Model 473 Series Tine Rake Dethatcher, 46" (473-46EZ4)JRCO Model 473 Series Tine Rake Dethatcher, 46" (473 46EZ4) 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 Tine Rake Dethatcher is the ultimate spring clean up tool. Use the rake for the first mowing of the spring to remove thatch, embedded leaves and debris. The patented tines lift thatch without damaging healthy turfgrass and