Halfway through a cage brace install, a dull bit in hardened JL cage tubing stops the job. The factory tube is 14 gauge but hardened, and ordinary drill bits do not get through it.
This kit adds two 1/4in cobalt hardened bits and a conical tree die grinder bit to clean up the holes. Run the drill slowly, around 300 RPM, keep the spare bit ready, and finish the install the same day.
MPN RH-90710
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