over that of the generally poor performance of conventional round wire basket legs also any type of inner surface according to the invention can be smooth or it can be rough as described above some additional basket leg shapes according to the invention are shown in fig7 a 7c and 8 a 8 e and are described below with reference to those drawings in general these and the other specific shapes disclosed herein are just some of the possible leg shapes according to the invention referring to fig7 a and 7b another disclosed embodiment of a basket according to the invention includes four generally v shaped or wedge shaped legs as with the d shaped wires of fig6 a and 6b the inner surface of one or more of these legs can be rough so as to enhance the stone capturing and holding ability of the basket and the roughness can be created in a variety of manners including serrations teeth etching etc on the inner surface s in fig7 c grooves are shown on the inner surface of one of the v shaped legs of fig7 a and 7b even without the rough inner surface the v shape with its point enhances the ability of the basket to engage and hold stones and to break and or crush the stones if desired in fact the point or ridge on the inner surface of these wedge shaped legs can be sharpened to form a cutting edge that will easily and firmly.