This is the Valpar SuperFlexmaster commercial grade line....

http://www.valpar.co.uk/pdf/Flexmaster.pdf

 8mm I.D.  x 5mm O.D

10mm I.D.  x 6mm O.D 

Benefits:

• Reduced bacterial growth and yeast adhesion so that the taste and quality of your beer is maintained.
• Improved and easier cleaning. 
• Improved carbonation levels of dispensed product. 
• Suitable for tight bend radius applications.
• suitable for use with barbed or push to connect fittings
• High Kink resistance.
• colour Natural 

BULK BUY Discounts available for 10 metre plus lengths (select bulk buy option from the drop down menu and update length required in metres in the basket at the checkout...click update so price calculates.