18mm to 18mm Fire Cut Downstem

This downstem fits 18mm water-pipe joints and takes an 18mm bowl. Fire-cut down-stems provide the best and most reliable diffusion while preventing blockage by spent combusted materials.The small holes are cut using a hydrogen torch, a difficult and complicated process but the fucntion is superb. 18mm male to 18mm female joint Fits into 18mm Female Joints Fire Cut Diffused Downstem 3'' to 6'' Inches