Double locking jack stands help support vehicles after lifting with a jack; Handles a wide range of vehicles including small cars (Suitable for most 3 Ton autos, not recommendable for big Pick-Up truck, Truck, too big off-road SUVs etc) Features a lifting range of 11-1/4" to 16-3/4" with a 3 ton (6,000 lb) load capacity; Saddle has a large surface area that provides better contact with the load being supported Constructed with heavy-duty steel and is industrial welded for quality and long term durability; Removable locking support pin provides added security that increases safety by 200% Wide pyramid style foot base provides added strength; Large foot base delivers additional stability and measures 7-11/16" x 6-7/8" .