I found that the best way to install threaded inserts is to use my drill press as a heavy-duty manual press.
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🔧【Package Include：】1 pack (8-in-1) faucet and sink installe--with 2 replaceable heads have an inner diameter of 34mm & 40mm,20 pack 25mm Washer
Faucet and Sink Installer,Multi-purpose Wrench (Nuts/Shut off valves/Strainer Baskets/Line&Faucet Nuts) for Toilet Bowl/Sink/Bathroom/Kitchen
Adjustable Spud Lock Nut Plumbing Wrench Tool
Make Quick Work of Threaded Inserts