These new pliers are Fast, Positive Locking, and have an Automatic Spin Slide Return. They are an incredibly versatile tool for rapidly and consistently applying safety and locking wire to critical assemblies. These pliers are great for wiring any parts subjected to loosening from vibration such as aircraft nuts and bolts, drain plugs, motorcycle parts, or hoses. These pliers are often referred to as 6 inch pliers, if the silver knob is not included in the measurement.