1. Enhanced type chain size : Height ( exclude teeth height) 12.7 mm , Thickness 1.6 mm , Plate chain format 4 x 4,Tensile strength 5.5 tonne; 2. Enhanced type speed reducer size : L × W × H , 117 × 76 × 32 mm; 3. Body belt & Chain lanyard tensile strength, 4 tonnes and 6.3 tonnes.