Two pair of jaws. Spread: 3" to 5", Reach: 1" to 5". One 3/4"-16 x 5" live center forcing screw. A clamp bolt. 5-1/2" crossbar with 3 spread settings. Weight: 4 lbs ; 11ozThis is used for the removal of stubborn air conditioning clutch pulleys. Also can be used on many alternator, generator, power steering and crankshaft pulleys, harmonic balancers, and fiber timing gears. Included in a blow molded, plastic case for storage.