A cutting apparatus, comprising: a plurality of cutting elements; each cutting element comprising an L-shaped protrusion that projects upwardly and outwardly from a cutting element body; each cutting element body having a cutting element tooth facing inward toward the interior of the cutting apparatus midline; each cutting element tooth having at least two cutting surfaces (215A, 215B) oriented in at least two different directions, thereby allowing the cutting apparatus to sufficiently penetrate a substance via moving in at least two different directions defined by the different directions of orientation of the cutting surfaces (215A,215B); wherein the cutting apparatus further comprises a plurality of anti-kickback connecting links (230A, 230B) positioned on either side of the cutting elements and on the same side of the cutting apparatus, and displaying protruding curved teeth oriented toward the cutting element; at least one partially flexible elongated element, having an orientation corresponding to that of the cutting elements and sharing the same connection point as the cutting elements, wherein the cutting element is arranged on the flexible elongated element in a manner so that at least two cutting surfaces (215A, 215B) face substantially opposite directions; a plurality of bar guide links capable of receiving, equally, one-half cutting element and one-half flexible elongated element centrally, each of the cutting elements being pivotally attached to a bar guide link; the next sequential bar guide link is capable of receiving the second half of said cutting element and two anti-kickback connecting links (230A, 230B); and a plurality of rivets, or like connectors, joins each bar guide, cutting element, anti-kickback connecting link (230A, 230B) and elongated element to one another a plurality of cutting elements; each cutting element comprising an L-shaped protrusion that projects upwardly and outwardly from a cutting element body; each cutting element body having a cutting element tooth facing inward toward the interior of the cutting apparatus midline; each cutting element tooth having at least two cutting surfaces (215A, 215B) oriented in at least two different directions, thereby allowing the cutting apparatus to sufficiently penetrate a substance via moving in at least two different directions defined by the different directions of orientation of the cutting surfaces (215A,215B); wherein the cutting apparatus further comprises a plurality of anti-kickback connecting links (230A, 230B) positioned on either side of the cutting elements and on the same side of the cutting apparatus, and displaying protruding curved teeth oriented toward the cutting element; at least one partially flexible elongated element, having an orientation corresponding to that of the cutting elements and sharing the same connection point as the cutting elements, wherein the cutting element is arranged on the flexible elongated element in a manner so that at least two cutting surfaces (215A, 215B) face substantially opposite directions; a plurality of bar guide links capable of receiving, equally, one-half cutting element and one-half flexible elongated element centrally, each of the cutting elements being pivotally attached to a bar guide link; the next sequential bar guide link is capable of receiving the second half of said cutting element and two anti-kickback connecting links (230A, 230B); and a plurality of rivets, or like connectors, joins each bar guide, cutting element, anti-kickback connecting link (230A, 230B) and elongated element to one another