The Climax BB3000 Portable Line Boring Machine bores from 1-1/2 to 5 inches in diameter. The 1-1/4 inch diameter bar is available in almost any length. A universal type motor drives a 7.5:1 reduction gear box, and produces up to 90 ft-lbs of torque at the bar. The BB3000 has a metal removal rate of up to 1 cubic inch/minute in C1018 steel. See this product at