Where can I get 4mm OD 2mm ID brass tubing or do I have to buy 4mm and 3 mm and put one inside the other?
may also be employed in conjunction with a drawn reciprocation dingle arm, to reduce sinusoidal repleneration
Where can I get 4mm OD 2mm ID brass tubing or do I have to buy 4mm and 3 mm and put one inside the other?
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