1156 flat angle special decoder 1156 crooked angle special decoder 1 T20 monofilament special decoder 1 T20 double wire special decoder 1 1157 double contact point special decoder 1 1157 double contact point special decoder 1 1157 double contact point special decoder 1 1157 double contact point special decoder 1 1157 double contact point special decoder 1 1157 double contact point special decoder