Variable tooth spacing for cutting in various materials. Flexible and shatter-proof, for cuts in metals, wood with nails and synthetics Standard Cut Bi-Metal OAL = 150mm / 6" 1.8 - 2.5 TPI Cuts 3 - 100mm / 1/8 - 4" metal embedded wood or 3 - 12mm / 1/8 - 1/2" metal