The outer joint is at an angle of 105°,Used with distillation set-ups,Hose connection is on the side opposite of the upper joint,Fabricated from borosilicate glass,Length values represent "Stem Length Below Bottom Joint (mm)". ● Material:Borosilicate glass ● Color:Clear ● With vacuum take-off and drip tip ● Long Stem vacuum adapters ● With joints on both top arms and on lower inner joint