VDT 10mm x 90cm Rotary Rod - Solid Nylon Rod - Stainless Steel Fittings
 
The 10mm Solid Nylon rotary rods are quadruple crimped at each end of the fittings/ferrules, they are corrosion resistant as they are solid stainless steel with double buttons for double security. 
 
They are extremely flexible for tight bends and ideal for 3" to 6" ducts
 
These rods are 90cm in length, the reason being is that the thinner rod you use at a long length then is looses its rigidity and can cause 'slap', stress the rod and eventually snap. So we found after much testing, a slightly stiffer but still very flexible rod is a better rod at 90cm and can get round 90 degree bends with ease.
 
(NOTE: PLEASE ENSURE THAT YOU ALSO ORDER A DRILL ADAPTOR TO BE ABLE TO ROTATE THE RODS)