The Yost 750-DI weighs up to 50% more than the competition. The ductile ironbody is 2X stronger than cast iron Vises. Extreme Grip Machinist Jaws featuredeeper serrations to grip parts better. Self Align Pipe Jaws conform to thepart they are gripping, reducing marring and increasing clamping pressure. The360 degree Gear Lock Swivel Base prevents the Vise from turning once it islocked down. The Quick Action Pull pin allows you to rotate the Vise quicklyand easily. There are twelve different locking positions. This Vise alsofeatures a reinforced anvil and 4 mounting tabs to securely attach it to thework Bench.