Sunex 8300GB 1/2-Ton, Foldable Engine Stand Handles and positions virtually all automotive engines for repair or maintenance 63 to 1 ratio worm drive gearbox easily rotates engine by a simple turn of the crank handle Safety self-locking feature secures the engine in desired position Space-saving foldable design for storage Ball-bearing mounted swivel caster wheels for maneuverability include safety locks to prevent stand from moving