Tool I removed from top of saddle bag (7)
I believe the answer is:
spanner
'tool' is the definition.
(spanner is a kind of tool)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for spanner that I've seen before include "Hand tool to grip and turn" , "Hand tool to hold or twist" , "Wrench for nuts" , "Tool for gripping nut" , "Mechanic's agent" .)