Made specifically for FIRMAN Power Equipment Generators. This kit will work with any P, H or T series generator between 3.55KW and 8KW. The kit has pneumatic tires for rolling over rough terrain and acts like a "Lift Kit" for the 3.5KW-4KW generators. The 1505 wheel kit was designed for ease of portability. With (2) 11 wheels and axle pins, this wheel kit can be easily installed as a solo job and also comes with a high leverage folding handle and grip. The base of the wheel kit is also supported by rubber leg mounts to reduce vibration. Note: All tools necessary for installation are included