The MMTB is miniature preset production torque wrench with a fixed head. The versatile wrench is available with different head configuration options, like open, box, flare, hex key and ratchet head. MMTB models are design to have one permanent head style attached to it. When the MMTB torque wrench achieves torque, the head breaks-over preventing the operator from overtorquing the fastener. To Order Call (408) 292-2214