Price is per foot.  Maximum length you can order is 8 feet.  If you order for example 12 feet you will get an 8ft length and a 4ft length.

This high quality EVABarrier beer line will keep your previous beverage in it's best possible condition in the process.

This 4mm size is the one of the most common sizes for kegerator setups.

When using this 4mm ID size you will need to use about 3-4 meters of beer line to get adequate flow resistance between your keg and tap for most kegerator setups.