Rockwell RW8943 Sonicrafter Sonishear Scissor Attachment for RK5139K and RK5140K Attach to Sonic rafter to make cuts to carpeting, packaging, cardboard, wire, leather, and floral Will cut materials up to 1/16-Inch thick Makes contour, curve, and straight-line cuts For Hyper lock Sonic rafter models RK5139 and RK5140 Dimensions, 3.70 L by 2.70 W by 2.0 H Inch