A new design of this simple tool for drilling small holes in metal or wax models. The adjustable chucks (2 provided) can accommodate drill sizes 57 through 80 (0.34 to 1.09 mm). Pulling up and down on the knurled plunger causes the body of the hand drill to spin like any other drilling device. The drill is held steady by resting one finger on top or by gripping the knurled section of the hard plastic body. Overall length is 7.5". Chucks and spring are nickel plated steel.