American Saw's Lenox High Tension Hand Hacksaw Frame features a heavy duty aluminum handle, a rectangular steel crossbar, permanent hardened and serrated blade holding pins, a steel tensioning nut, and a fold away tension lever. The frame has a 45 degree blade holder that pins for flush cutting, and the frame can be converted to a jab or compass saw. The blade can be tensioned to 30,000 psi, about twice that of ordinary frames. Spare parts can be stored inside the tubular back. Easy and safe to use, this frame has no blade twisting and resists breakage.