The Strongarm 391SHD is a super heavy duty, low-profile air/hydraulic bottle jack with a 20 T capacity for trucking, agricultural and fleet applications. Its tank and frame use welded construction for demanding service, while a 1-1/8" thick base supports stable lifting on uneven surfaces. Manual operation remains possible when compressed air is not connected. Two return springs speed ram retraction, and a safety bypass is included.

• Identification: MPN 391SHD; SKU SUW-030160.
• Air operating pressure: 110–120 psi.
• Height range: 7.01" low height and 12.76" high height; lift: 3.35"; screw extension: 2.40".
• Precision-machined parts help limit O-ring damage; high-quality O-rings support longer service life and improved sealing.
• Premium components offer a stated 4:1 advantage in life expectancy.
• Shipping weight: 36 lb (16.2 kg).