There are no returns or exchanges on downstem products all sales are final. For help measuring your downstem see the sizing guide in the tab below.
Downstem Sizing Guide
Downstems have three key measurements:
Length - Measured from top of ground joint to bottom of stem in inches
Diameter - Measured at top of ground joint in millimeters, this is the width of the downstem where it will enter the Water Pipe, shown as number before the /,
e.g 18/14 = 18mm
Slide/Bowl - Measured at inner diameter of top opening in millimeters, this is where your slide goes, shown as number after the /
18mm and 19mm are the same size, the technical measurement is 18.8mm. Different brands choose to say 18mm or 19mm don't let it confuse you they are the same thing.