This ad is for 1 (one) 18.8mm CLEAR BASIC CONE shaped glass slide bowl for your hookah, water pipe with a single hole exit and a clear glass gripping horn.
The bowl including the ground joint is about 2 1/4" long and has a 18.8 mm male joint size. The actual bowl part of the slide is about 1 1/8" diameter at the top surface x 5/8" deep cone shape with a single hole exit at the bottom of the bowl.
The gripping ring is about 1" in diameter and 1/8" thick.