A TENSION STANDARD 1 unit ~6 , 1 unit 2 folds ~5 unit 2 folds

DIAMETER no.1:0.016 no.2:0.230 no.3:0.280 no.4:0.320 no.5:0.360 no.6:0.400 no.7:0.430 no.8:0.470 no.10:0.520 *Promotion standard: 50 it is burnt Oh 1~2 Hu, 75 it is burnt Oh 3~4 Hu, 150 it is burnt Oh 4~6 Hu