Keeping inventory of hose (8)
I believe the answer is:
stocking
This could be a double definition.
'keeping inventory' is the first definition.
'stocking' can be an answer for 'keeping'. I'm not certain of the 'inventory' bit.
'hose' is the second definition.
(I know that stocking is a type of hose)
'of' acts as a link.
Can you help me to learn more?
(Other definitions for stocking that I've seen before include "Item hung up at Christmas" , "Keeping supplies of; item of wear" , "some legwear" , "Filling up" , "See 8" .)