Dremel 678-01 Circle Cutter and Straight Edge Guide. Makes circles from 3/4-12 inches (1.9-30 cm) in diameter. Precision stamped steel construction for accuracy and durability. Attaches quickly and easily without tools. Depth adjustment allows easy setting of the correct cutting depth Straight Edge Guide allows routing or cutting in a straight line. Includes; Circle Cutter Attachment, Straight Edge Guide, and Instructions.