The handy thtpa40 plug aerator can be towed behind a lawn or garden tractor removing five 8 1.58 cm diameter soil plugs from the lawn. This allows compacted soil to loosen up which lets in moisture and nutrients for healthier root growth.the thtpa40 has a 40” 102 cm working width with utilising 24 hollow core tines. The tines are best suited to easily compacted soil such as clay and can penetrate the soil up to 3” in depth. The steel construction sits on 10 pneumatic tyres for a smoother ride. specificationsworking width 40 inchtines 24 hollow coremaximum weight capacity 45kg 100lbmaximum ground penetration 3 7.6 cmtyres 10 26.6 cm pneumatichitch pin includedsingle hand lift leverproduct dimensions l 107cm x w 36cm x h 28cmproduct weight 33kgmanufacturer warranty 12 month home owner