The GoLab Laboratory 2-Pack Glass Heavy Wall Funnel with short stems has a diameter of 120mm and a stem length of 120mm. Made of durable borosilicate glass, it can withstand temperatures up to 200°C. Each pack includes two StonyLab borosilicate glass funnels. We prioritize high-quality products and offer premium customer service. If you receive a damaged product, please contact us immediately, and we will resolve the issue to your satisfaction.