Comparison : Item # QD-36-1, QD-36 Distillation Receiver, Radial, Straight
Item # QD-36-2, QD-36 Distillation Receiver, Radial, Straight
Item # QD-36-3, QD-36 Distillation Receiver, Radial, Straight
Item # QD-36-4, QD-36 Distillation Receiver, Radial, Straight
Item # QD-36-5, QD-36 Distillation Receiver, Radial, Straight