This is the difference between a Gripedge RPT impact Hex and a Standard Impact Hex tool. The Gripedge RPT Hex prevents damage from happening in the first place with rounding prevention technology. When you use a Standard Hex it pushes outwards on the fastener, damaging it over time. Gripedge RPT Hex is a complete replacement and will prevent damage from happening to fasteners. #mechaniclife #MechanicTools #automotive #GripEdge #enginerepair | GripEdge Tools