Comparison : Item # 1012-02, Adapters, Distillation, Bent 105º, 1/4" Vacuum Take-Off, 14/20 Joints
Item # 1012-04, Adapters, Distillation, Bent 105º, 1/4" Vacuum Take-Off, 19/22 Joints
Item # 1012-06, Adapters, Distillation, Bent 105º, 1/4" Vacuum Take-Off, 24/40 Joints
Item # 1012-08, Adapters, Distillation, Bent 105º, 1/4" Vacuum Take-Off, 29/42 Joints