Surface of jack has a non-skid pattern, assuring that the jack won't "walk away" form the job. Jacks can be used to lift a loead from an uneven surface, are tolerant of side-loaded applications.
Field-replaceable nipples are made of tough steel, with internal thread to prevent abrasion damage. Ideal needle aperture of 1/4" allows rapid inflation, without risk of icing, and permits a safe lowering speed.
Safety first! The controller, shut-off and air hoses are all equipped with USA industrial interchange style air couplers. Female half coupler bodies have a locking collar, protecting operator from accidentally disconnecting jack while under load.