A cutting device for use with a powered surgical tool comprising an outer blade (24) having a distal end (28) having an end cap (128). The end cap is planar and perpendicular to cylindrical sides of the outer blade. A distal cutting window (26) is formed in the end cap and the cylindrical sides, and the distal cutting window is defined by edges (130, 132) having protrusions and window teeth (134). The cutting device comprises an inner blade (20) having a distal portion including a cutting tip (22). The cutting tip includes teeth (116a, 116b) configured in pairs that extend radially toward one another across a first opening and castellations (112a, 112b) that extend parallel to a longitudinal axis of the inner blade toward the end cap of the outer blade. The castellations extend along the distal portion between the first opening and a second opening, and the second opening is circumferentially spaced from the first opening. The inner blade is disposed coaxially within the outer blade along a longitudinal axis with the cutting tip aligned within the cutting window. The window teeth of the cutting window are longitudinally offset from the teeth of the cutting tip.
