This is 5mm metric brass tubes with a wall thickness of 0.45mm . Please select pack size from the drop down box, postage is already included in the pack size price.
5mm will fit inside the 6mm perfectly

They are 300mm long the size is outside diameter

INTERNATIONAL BUYER PLEASE READ BELOW

Royal Mail Airmail (small packet) is NOT a tracked or insured service.

Royal Mail International signed-for is tracked and insured upto £50 these are royal mail prices not mine and is completely of of my control.