Our piston vise is by far the best buy on the market when you look at all the features offered versus our everyday low price. Our vise locates and holds the piston by two wrist pins. Once it's set up, you can just drop in the other pistons and go. It will even hold a piston upside down for balancing or lightening operations. The compound angle feature is what truly makes this vise unique. It not only rotates the piston from front to back, but also from side to side (necessary for Ford and Big Block Chevy pistons). This blue anodized beauty is rigid and repeatable.