The 40" plug aerator is made of black powder coated steel and the plug aerator is towed by a garden tractor. It has a convenient weight tray that allows you to add weight as needed for optimum performance.working width:40", overall weight:66.14 lbs, package dimension:42.13*13.78*6.69 inch (l x w x h), pneumatic tyres diameter:10", capacity:Approx 45kg