Penny Head Solid Cone Stopper, 10/19, Borosilicate Glass Human Anatomy_Human Skeletons & Bones Heavy-duty cork boring machine cuts

Heavy-duty cork boring machine cuts precision holes through rubber and cork stoppers for fitting laboratory glassware

Three copper plates suspended in an insulated cover over a glass jar of copper sulfate solution

and stirrer for thermal-mixing measurements of specific heat and heat of reaction

and gray links in a 4-compartment storage case

sized at 10 inches for focused respiratory anatomy teaching

Penny Head Solid Cone Stopper, 10/19, Borosilicate Glass Human Anatomy_Human Skeletons & Bones Heavy-duty cork boring machine cutsPenny head solid cone stopper in borosilicate 3. 3 glass features 10 19 cone for sealing ground joint vessels with finger grip top design.