These steel threaded inserts can be used anywhere you want the strength and easy assembly of a bolted connection with a wooden joint. Simply bore a hole, drive in the threaded insert, and use a bolt of the appropriate length to secure the adjoining member in place. Perfect for eliminating stripping and pull-out problems in knockdown furniture. See below for individual sizes. Size listed below is the size of the bolt (sold separately) that threads into the insert. Sold in packs of 8.Technical Details:Can be installed with screwdriver, threaded insert wrench or threaded insert power drive tool.Rugged steel construction.Can be used for wood/wood joints, or wood/non-wood joints.Brad point drill recommended for drilling pilot hole.To install, simply drill a pilot hole slightly narrower than threaded insert body.