This is a bulk product - one unit equals 1 meter.

Clear 4mm ID Ledavin PVC tubing perfect for gas or beer line. Capable of fitting a standard disconnect barb, not suitable for push in fittings (without a barb to tube adapter).

This is in our opinion the best beer line for home use, where you want the line as short as possible (kegerators, fridge mounted taps etc). It's got great line resistance, has a small diameter and therefore you need a much shorter hose to supply the needed line resistance.
1 meter of 4mm Ledavin at 12 psi is a good balance.

Ledavin Beverage tubing is manufactured from materials compliant with FDA and AS2070 for food and beverage contact applications.  This highly flexible tubing offers excellent resistance to cracking and impact along with a glass like clarity and smooth bore to provide ideal flow characteristics for a variety of food and beverage applications

For more spec info please see here