The x-treme rotary tiller is a perfect attachment for tilling gardens and small fields. It's also great for deer hunters to use to make food plots. This tiller has a bidirectional rotation and can till ground up to 6" deep. The low flow single motor tiller runs between 14-20 GPM. The high flow tiller with a dual motor system runs 20-40 GPM. Extreme Tiller Low Flow 72" - $2911.00 Extreme Tiller High Flow 84" - $4003.00.