The cutting edges of the Spherical Concave Cutters below are rounded, as compared to the straight blades of Standard Concave Cutters. The results are spherical cuts which are round and hollow and heal with the most esthetic and least visible wounds. The tiny head of the Professional grade Me-Tsumi, our smallest Concave Cutter, permits incredibly fine, close cuts on very small foliage. Its main applications are with early Bonsai and new growth on larger trees. 7/16" blades, 6 3/4" overall length