Height: 7.5" Inches / 190mm Joint Size: 19mm Female Joint Thickness: 7mm Triple Inline Diffuser Base. This Build-a-Bong® base is unique stemless design that incorporates a triple inline percolator to filter smoke and ash. The awesome shape of this base makes any setup stand out, and it doesn't require a downstem. Connect it with any Hoss Glass® middle or top pieces. Includes: (1) Y420 - Triple Inline Diffuser Base (1) YX12P - 19mm Bowl (1) YX8 - 45mm K-Clip Caution do not pick up waterpipe by the neck. Always support the base.