Dimensions: 
inner diameter = 14mm
outer diameter = 16mm (first stage), 20mm (second stage)
length = 36mm

Content:
1x pelvic hose connector
1x clamping ring

connection:
pool: Fits in 27mm (3/4 ") holes with a wall thickness of 4mm!
Hoses: 14/10-tube is tightly inserted into the socket 14mm
                  20/16 hose is firmly seated on the first stage 16mm plugged
                  22/18 tube is tightly fitted on the second-stage 20mm
                  24/20 tube is loose-fitting attached to the second stage 20mm

Description:
This pool connector is inserted through the 27mm hole with a glass wall thickness of 4mm. A clamping ring fixes the connector on the glass basin. Hoses with an outer diameter of 14mm or an inner diameter of 16mm or 20mm can be attached to the other end of the socket.

Note: New version
since November 8th, 2011 ! A tighter fitting nut was added to the set. New version
since 15.09.2016 ! Transparent and can be used for multiple hoses.
Since March 8th, 2019 new version! Stable hose connector for easy insertion.
Since 07/14/2020 new version! Completely transparent with counter clamping ring