Hydraulic bottle jack designed for residential and commercial use; Serrated, heat treated saddle provides generous lifting area and secure grip. Features a lifting range of 7-1/2" to 14-5/16" with a 4 ton (8,000 lb.) capacity; Adjustable screw top extension adds versatility. Engineered using a drop forged alloyed steel construction for quality and durability; Inner/outer welded structure delivers leak-free PERFORMANCE: Glide-action pressure pump is designed to lift with minimal effort; Integrated built-in oil-bypass and overload valve that protects the hydraulic system from extending beyond limits. Includes a limited 1 year manufacturer warranty