Eye Shortening Grab Hook Load Chart EN1677-1Safety Factor 4:1 SIZE MMWLL TONNE6 MM1.12 TONNE7/8 MM2 TONNE10 MM3.15 TONNE13 MM5.3 TONNE16 MM8 TONNE18/20 MM12.8 TONNE22 MM16 TONNE26 MM21.2 TONNE32 MM31.5 TONNE