Hollow coring with a triplex green mower? It now is possible with the unique MAREDO GT230 HiSpeed-Corer heads. The GT230 heads offer a solution for keeping greens healthy and in good shape. The hollow tines will remove huge amounts of thatch by producing a pattern of tiny well-cut holes. These holes will not affect play on greens and will heal very quick. Multiple tines and tine sizes are available. Solid tines or slicer tines will open the top surface allowing Oxygen to reach the roots of the grass. The MAREDO GT230 heads can be used at mowing speed making hollow coring and aeration a fast operation. Get your turf in better shape by choosing the MAREDO GT230 HiSpeed-Corer heads!