How much microbore will I need to pump an Injection Velocity?
should be the same amount as Indy and ZR.

screwfix stuff should do the job...

B&Q or even your local plumbing merchant (should cost more per metre but you can buy just what you need so should work out cheaper)

My next door neighbour qualifies as a "microbore".......shorthouse boring git that he is

wonder what he says about you

(hate to think what my neighbours think of me)

Single feed 3m

my plumbers merchant sold me 3 meters for about £2