Production Description:1: APPLICATION: Suitable for repair and maintenance of jacks below 20 tons.2: MATERIAL: Made of solid metal material, high hardness and stability, can meet your vehicle maintenance needs.3: CONVENIENT EFFICIENT: Vertical jack accessories Suitable for maintaining the performance of the jack.4: FEATURE: Designed for hydraulic vertical jacks below 20 tons, Stable performance and long service life.5: PACKAGE: The package includes 2 pcs threaded screw, 2 pcs washer and 2 pcs small steel balls.Package Included:1 Pack Foldable Portable Stool