MoJack MJ-60 Hefty Trac 400-Pound Lift For Tractor Style And Small Zero Turn Radius Mowers If the measurement between the front tires of your mower is between 19 inches and 28 inches, the HEFTY TRAC will fit your mower. Safely and efficiently change the mower blades and perform routine maintenance. Lifting capacity of 400 lbs with 25 inches of clearance underneath the mower. Fits mostly tractor style mowers and small ZTRs. Change blades or clean mower deck safely and easily