PME #2.5  Writing Tube.   Seamless Stainless Steel.
Supatube 2.5 icing piping nozzle tube tip by PME
professional quality seamless stainless steel
exclusive "half size" from PME
size TWO POINT FIVE - medium fine line for fine writing & detailed work
please remember there is no standardised numbering system 
- different brands vary in size and US / UK systems are different
approx 40mm long x 15mm diameter at bag end
use the CEP adaptor coupling to change nozzles without having to empty your pping bag - according to PME, Supatubes fit a standard Delrin coupling but, in our experience, the fit can often be quite loose so we always recommend the CEP adaptor coupling which offers much greater stability and control