Bluebird H530A Walk-Behind AeratorGreater productivity, better maneuverability, and a user friendly design are just a few of the outstanding features that make the 530 (19 aerating width) lawn aerator a breeze to operate. BlueBirds patented, free wheeling tine system allows even inexperienced users to easily aerate corners and tight areas. Operators of the 530 will appreciate its simple design and low maintenance costs. A folding handle, lift handles and semi pneumatic front tire