Ordering Description Product number Description: Tweco 61-180 Conductor Tube (180 DEG) Neoprene Rubber, No. 1 Product number: 1610-1104 Description: Tweco Classic No. 1- 60 Degree Conductor Tube- 2.5 " (63.5 mm) Radius- Air Cooled Product number: 1610-1102 Description: Tweco 61-45 Conductor Tube (45 DEG) Neoprene Rubber, No. 1 Product number: 1610-1101