Model Stroke A B C ØD E F ØG H I J M/K SCA2020B 20 124 89 20 6 13 6 18 6 24 27.7 M20×1.5P   Model Stroke Total Energy Total Energy per hour Effective Weight Shock Force Return Force Weight SCA2020-1 SCA2020-2 SCA2020-3 20 30 35,000 Less 10 Less 16 Less 32 1,900 10~30 130