... withstand(KV):12,screw(mm):8,weight(G):865. SM-45Tensile strength(LBS): 1000 Tongue Strength (FTLBS):20 ... withstand(KV):15Screw (mm):8,weight(G):706. SM-51Tensile strength(LBS): 1000, Tongue Strength(FT LBS): ... (KV):15Screw (mm):8, weight(G):837. SM-60Tensile strength(LBS):1500 Tongue Strength(FT LBS):40 ... ):25,screw(mm):10, Weight (G):1708. SM-76Tensile strength(LBS): 1500 Torque Strength(FT LBS): ...