The units are available in 0.250, 0.375, 0.500, 0.625, 0.750, 0.875, and 1.000-in. bore sizes, torque ranges of 0.06 to 25 lb-in., 1.65 to 3.11-in. lengths, and weigh 0.73 to 8.985 lb.

Stock Drive Products/Sterling Instrument, 2101 Jericho Turnpike, Box 5416, New Hyde Park, NY 11042, (516) 328-3300, sdp-si.com