COLONIAL NEEDLE: Turn-Sharp. This rotary blade sharpener makes sharpening blades effortless! You can easily turn the knob with your right or left hand; no batteries or cord to worry about; and you can use it with 28mm and 60mm rotary blade sharpeners. This package contains one Turn-Sharp; one 45mm rotary blade sharpener; and complete instructions. Sharpener made in USA; base imported.