Glass Tube Adapter?18MM Male to 14MM Male Essential Adapter Streamlined

About material: Borosilicate glass has very low coefficient of thermal expansion, which is about 1/3 of ordinary glass. it features with heat-resistant to achieve good adaptability in the range of 200? temperature difference. About us: We are professional glass manufacturer, if you want to order a large quantity, feel free to contact seller, you will get wholesale price. About service: We boast excellent customer service with a high satisfaction rating.