This part is a (1) 3/4" X 1" Barbed Coupler that fits 1" OD , 3/4" ID Clear Hose on one side and 1 1/4" OD , 1" ID on the other side.
These are used for connecting Clear Hoses together in Hot Tubs...
This part is a 90 Elbow, 3/4"slip x 3/4"spigot..
This part accepts a 3/4" Pipe or fitting on the slip side that would measure about 1" Outside Diameter and glues inside of a 3/4" fitting on...
This part is (1) 1/4" X 3/8" Barbed Coupler that fits 3/8" OD , 1/4" ID Clear Hose on one side and 1/2" OD , 3/8" ID on the other side. These are used for connecting Clear Hoses together in Hot Tubs...
This part is a 3/4" Barb Adapter x 3/4" Slip / 1" Street.
The Glue Side glues inside a 1" Fitting (like a coupler) and the inside would accept a 3/4" Pipe flex or hard that would measure...