One of a kind drill attachment. Designed with a head thickness of only 7/16" for drilling in areas as close as 1". Fits any air or electric drill. Accepts 1/4x28 threaded drill bits and other accessories for close quarter drilling. Dimensions are 6-5/8" long, 7/16" head thickness, 2-5/16" offset distance, 7/16" side to center. Drill capacity is 1/4". 1 lbs (0.5Kg) shipping weight.