This is two extra reinforced Diffusor-Downpipe-Adapters with Standard Ground SG 29/19. The dual Diffusor-Downpipe-Adapters consists of two detachable adapters each with slit. The inner Down-pipe has a 5-Arm 10x slit diffuser and the external Adapter has a 12x slit-diffuser. This provides powerful turbulence and cools the smoke optimally. The 'Blaze Glass' logo in silver is positioned on the outer tube.