Key-ring tether attachment point in handle Jaws are milled with deep self-gripping pipe wrench style teeth for maximum bite Accurately machined undercut tongue and groove points for precision movement and joint strength Exclusive flush fastener provides better access with increased user adjustability making it 30% narrower Flush fastener allows pliers to lay flat in the work place and prevents snagging on tool belts/pouches Flush fastener is a nut and bolt assembly and can easily be adjusted by the end user in the field.