1Fitment: This axle saddle is compatible with both bottle jacks and floor jacks, fits right on your hydraulic bottle jack and easily secure your axle tube while raising the axle. 2Sturdy Material: Crafted from premium 6061?t6 aircraft aluminum, this saddle is both lightweight and sturdy, ensuring a long service life. 3Applicable Axles Size: This jack axle saddle is able to cradle axles up to 3 inches in diameter. We recommend measuring your axle to confirm compatibility. 4Applicable Lifting Platform: Fits on bottle jacks with a 1/2?inch lifting platform or smaller and most 12?ton bottle jacks. Also be used with floor jacks by placing it inside the jack cup. Recommend measuring your lifting platform to confirm. 5Versatile Tool: Used to lift vehicles from the axle, portable and versatile. Suitable for use in the garage, on 4x4 trails, or anywhere you need to safely lift your vehicle from a solid axle.