Hot Tub Compatible With Watkins Spas Tubing and Hoses Vinyl Tubing with Thick-Walled measures 1/4 Inch Dia. (ID) x 10 Feet HTCP70318 OEM. 1/4 Inches inside diameter (ID) by 10 Feet 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 from the front of the jet pump to the circulation pump and heater's plumbing in all 1985-2009 Hot Spring spa models.

• This is for a Single Vinyl Tubing, Thick Walled, 1/4 Inch Dia. (ID) x 10 Feet 
• High Grade Quality that's made to last!!
• The diameter is measure from the inside of the tubing
• 1/4 Inch Dia. (ID) x 10 Feet