Frontline's heavy wall rollers are available in three point hitch, or drawbar pull. Heavy duty pillow block axle bearings are 1-7/16" in diameter. The roller axle is solid pipe and is continous through the length of the roller. The roller pipe wall is 1/4" thick.
There is a fill plug located on the end of the roller so that water may be added to increase the rolling weight. The fill plug is 1" in diameter. The three point hitch roller features a weight box that is sized to accept concrete block additional weights. The weight box is 16.5" front to back and 3" deep.