17% larger than the standard model Ideal for reataining larger subjects 18-tooth, 3-retaining-bar system for uncompromising security Positive swing-through action Built-in backloading for fast cuffing Reinforced steel swivels for added strength and durability The Big Guys Chain Style is constructed with top-quality, heavy-duty steel construction featuring an 18-tooth, 3-retaining-bar system for uncompromising security and a positive swing-through action.