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Got a Dewalt impact driver that won't hold a bit anymore?
The problem is almost always a worn-out spring and steel ball in the chuck.
This repair kit gives you 5 complete sets—that's 5 springs and 5 steel balls—so you can fix multiple tools or have extras on hand.
They're made of solid metal and are direct replacements for part numbers N078434 and N089668.




5 out of 5