20 pieces, brand new. Molex RJ45 shielded plugs with black boots. Molex p/n 95043-2891. For use with 5.40 mm shielded Cat 5, and Molex crimp tool P/N 69008-1100. These are highly recommended for any network installations and wiring inside the aircraft, or instruments that might use RJ45 connectivity in the aircraft. These plugs normally sell for $1.25-$1.60 each. I also have the Molex crimper for these available. Please see my other auctions.