FLY Co. Copper Tubes
Packs of 10 tubes in a range of FIVE sizes - 10, 13, 20, 25 and 30mm.
Bright copper tubes of OD.
Copper is heavier than plastic but not as heavy as tungsten so you can fish at mid depths in reasonable flows.
PTFE Liner in place
Flyman's tip: Varnish these tubes to preserve the bright orangey colour of the copper and tie in your choice of long mobile wing - simple but deadly.