19/19mm Glass on Glass Sleeve. This fits our 30" tall AMG Glassworks water pipes.
This is a 19mm male to 19mm female sleeve. What does that mean? It means that the sleeve is a standard fitting that goes into the water pipe, and it fits on oversized 18mm slide/bowl.
5" long from the bottom of the ground joint to the tip of the sleeve. 7 3/4" long from top to bottom.