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Just take a 1/4" drill bit and do a pilot hole. Now drill a hole with a sharp holesaw the diameter required. Start off slow until the teeth have started cutting then increase the speed to a medium rpm and keep steady pressure.
Reason for a pilot is sometimes the holesaw will grab and will walk across surface.
Simple, now get er done!
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2015 RAM LongHorn Dually Air ride Aisin 4:10's
2016 MS 39TKSB3 "Highly Elited"
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