This is our large sized, clear top grade silicone water tubing. 1/4" outside diameter with 1/8" inside diameter, high flow silicone tubing. Thick walled to resist kinking, while still remaining incredibly flexible and virtually eliminates any cracking or pinhole problems.

Specs:
1/4" (6.35mm) Outside Diameter with 1/8" (3.175mm) Inside Diameter.

Sold in 3 foot or 6 foot lengths.