Craftsman QuikSecure Tractor Wheel Weights —
very easy to install on my crafstman 4500. they help on hills and in ditch in my front yard. again they are very easy to install with a 3/8 ratchet 4" extension and a 9/16 deep well on the inside and a 3/8 stubby wrench on the outside. can be done in 15 min or less.