Hot Tub Replacement Part Watkins Tubing & Hoses Vinyl Tubing, Thick Walled, 1/2" Dia. (ID) x 36" HTCP70316 OEM. 1/2" inside diameter (ID) by 36" long section of specially made thick walled, clear vinyl tubing. This thick walled tubing will stand up to the harsh chlorinated spa environment for years to come. This is the size of tubing that connects the circulation pump to the heater in all 1982-1989 Hot Spring spa models.
This is for a Single Vinyl Tubing, Thick Walled, 1/2" Dia. (ID) x 36"
High Grade Quality that's made to last!!
The diameter is measure from the inside of the tubing