Its usually better to repair and replace parts than to throw things away, and this replacement parts set is sure to get your trains back on track as soon as possible. Included in this set are 5 replacement hooks, 5 replacement couplers, 2 flexible couplers, and a screwdriver. These aftermarket parts work with many toy trains, including Thomas, Trackmaster, and Tomy. Included triangle head screwdriver will work on the majority of trains. Please note that you will not necessarily need all the included parts for all train repairs, this repair kit is made so you can buy one product and get as many trains as possible running smoothly again.