STM-1anti-tank mineThe STM-1 appears to be a Singapore copy of the French MI AC ID M 52 non-detectable antitank mine. It is a relatively simple, pressure-activated, blast antitank mine. Although the French make both pressure and tilt-rod fuzes for the MI AC ID M 52, the STM-1 has been advertised with only the pressure fuze.Diameter: 300mm Weight: 7kg Range: 20mSingapore