A reciprocating saw blade for use with a reciprocating saw, the reciprocating saw blade comprising: a body defining a longitudinal axis; an attachment portion coupled to the body, the attachment portion including a tang and an aperture configured to couple to the reciprocating saw, wherein the attachment portion is angled relative to the longitudinal axis by a tang angle; and a cutting portion formed on the body, the cutting portion including a plurality of cutting teeth, each cutting tooth including a tip and a relief surface extending from the tip; and wherein the tips of the plurality of cutting teeth define a plane that is parallel to the longitudinal axis, and wherein the relief surface of each cutting tooth intersects the plane at a relief angle, characterised in that: each cutting tooth further includes a non-cutting protrusion extending from an end of the relief surface opposite the tip, each cutting tooth defining an effective relief surface that extends from the tip and is tangent to the non-cutting protrusion; in that a distance between effective relief surfaces of adjacent cutting teeth is at most 1.5 mm (0.06 inches); in that the effective relief surface of each cutting tooth intersects the plane at an effective relief angle, and wherein a ratio between the relief angle and the effective relief angle of each cutting tooth is 1.6; and in that the effective relief angle is between the tang angle and the relief angle. a body defining a longitudinal axis; an attachment portion coupled to the body, the attachment portion including a tang and an aperture configured to couple to the reciprocating saw, wherein the attachment portion is angled relative to the longitudinal axis by a tang angle; and a cutting portion formed on the body, the cutting portion including a plurality of cutting teeth, each cutting tooth including a tip and a relief surface extending from the tip; and wherein the tips of the plurality of cutting teeth define a plane that is parallel to the longitudinal axis, and wherein the relief surface of each cutting tooth intersects the plane at a relief angle, characterised in that: each cutting tooth further includes a non-cutting protrusion extending from an end of the relief surface opposite the tip, each cutting tooth defining an effective relief surface that extends from the tip and is tangent to the non-cutting protrusion; in that a distance between effective relief surfaces of adjacent cutting teeth is at most 1.5 mm (0.06 inches); in that the effective relief surface of each cutting tooth intersects the plane at an effective relief angle, and wherein a ratio between the relief angle and the effective relief angle of each cutting tooth is 1.6; and in that the effective relief angle is between the tang angle and the relief angle. each cutting tooth further includes a non-cutting protrusion extending from an end of the relief surface opposite the tip, each cutting tooth defining an effective relief surface that extends from the tip and is tangent to the non-cutting protrusion; in that a distance between effective relief surfaces of adjacent cutting teeth is at most 1.5 mm (0.06 inches); in that the effective relief surface of each cutting tooth intersects the plane at an effective relief angle, and wherein a ratio between the relief angle and the effective relief angle of each cutting tooth is 1.6; and in that the effective relief angle is between the tang angle and the relief angle.