Greenteeth™ teeth are a unique brand of tree stump grinders’ chisels, imported and distributed by JO BEAU. The round, hollowed-out chisels can each be rotated 120°. This has the advantage that, if the front of the chisel becomes blunt, the chisel can be rotated 120° in the blink of an eye using a 13 mm wrench or ring wrench. This can be done in a workshop, but even better, the machine operator can do this on the spot where he is grinding the stumps. There is no need to make a drawing, so it is quite advantageous that you save time, costs and attention is paid to ergonomics.