ADI hydraulic chain saws are the fastest cutting, coolest running, lightest and longest lasting tools available on the market today. The high torque gear motor develops up to 6 HP, providing the fastest chain speed at a given flow rate compared to any other hydraulic chain saw. The oval shape of the fiberglass extension tube provides additional strength and allows for flexible hose to be used internally instead of the fiberglass tubes that the competitors use. ADI chain saws also feature a patented spool sysyem that eliminates heat generation within the tool. This provides a safety benefit to owners and operators alike and extends the life of the tool. To increase the versatility and cost effectiveness of the ADI saw the chain saw and circular saw heads are interchangeable if and when your needs change, you can simply change the head assembly instead of purchasing an entire additional tool.