OMI-BDU-50 Practice Bombs correspond to Mk82 General Purpose bombs 500 Lbs. These bombs have identical dimensions to live counterparts, same mass distribution, center of gravity (CoG) and moments of inertia. Suspension lugs are manufactured to MIL-STD-8591. Nominal displacement is 14″ inch NATO. On customer application lug displacement can be 250 mm WARSAW PACT. Inert load is usually wet-sand or other materials.