2 Post Lift Shim: Durable and easy to install. Suitable for common two-post lifts and four post lifts. Size: 50.8mm/2" x 50.8mm/2" x 1.2mm/1/22" Improve stability: Provides cushioning for driving, helps reduce lift bumps, ensures stable driving of the car in harsh road conditions, and ensures driving comfort and safety at the same time. Widely used: These worked perfectly for two post lift and four post lift. Package Contents: 36 shims black nylon spacers automotive lift shims. Used these shims to level the posts of 2 post lift and 4 post lift.