Terrible products. I purchased wax cartridges twice from them. The first time, it was leaking profusely and it was not a glass cart, but some plastic thing that melted easily. The second time, I bought two half G carts. The first half G cart was gone in a day, and was also leaking. The second one barely lasted two hours before finishing. Their packaging was also terrible, I cut myself trying to get the cart out. They are nice people but not cut out for this business if they cannot deliver a good product.