The product is a set of 100 Lionel TC 23 Nickel knuckle coupler rivets designed to repair Lionel trucks. These rivets are specifically for Post War Lionel trains in O gauge. The grading of the product is C-10 Mint, indicating that it is brand new and in excellent condition. This product is a valuable addition to any model railroad enthusiast's collection for restoring and maintaining vintage Lionel trains.