Material: Made of galvanized steel material, the GM alignment body gaskets are corrosion and rust resistant, strong and durable, not easy to break or fade, and can be used for a long time. Scope of Use: Our universal body shims are used to adjust camber, camber and toe of body parts or front or rear wheels. In addition, there are enough wedges in the package for universal use in a variety of leveling and alignment projects. Convenient Packaging: Our alignment shim kit comes with a convenient reusable and sealed 6 compartment box with the corresponding size and quantity clearly marked on the box, you can easily and quickly find the correct item, saving you time looking around for a specific size. Easy to store and use. Must Have Goodies: This slotted U-shaped alignment spacer simply inserts a solid alignment spacer between two parts or one part and the frame to create more separation and help align wheels or other suspension components. If you are a car enthusiast or professional mechanic, these auto body alignment spacers are ideal for you and we are sure you will need it. Adequate Quantity: You will get 144 Pcs tuning shims, the auto alignment body shim kit includes 4 sizes 1/64", 1/32", 1/16", 1/8" to fit different automotive applications. The various sizes and ample quantities will meet your diverse usage needs and are sufficient for your daily use or to share with others.