The FreeMax Mesh Pro/M Pro and M Pro2 Replacement Glass Tubes is specially designed for Mesh Pro and M Pro2 Tanks (also known as M Pro Tank). The Glass Tube is the original replacement manufactured by Freemax, a handy and practical spare part for your Mesh Pro/M Pro/M Pro 2. Constructed of food-grade Pyrex glass, it is durable and easy to replace. 3 capacity options 4.0ml/5.0ml/6.0ml with different bulb styles for your choice to refresh your Mesh Pro/ M Pro.