GRIPEDGE - It's All About The Grip! RPT (Rounding Prevention Technology) Hex Bit Sockets are designed to completely replace your traditional Hex tools. Use them the first time, every time, to prevent damage from happening. In most cases, If you come across an already stripped hex, the RPT Hex Bit Sockets can grip and remove them without the need for additional tools. Features: -Replaces standard Hex tools -Sizes Included - 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm -Patented unique bi-directional design enables loosening & tightening of new and damaged Hex fasteners -Prevents rounding of new and compromised Hex fasteners -Up to 50% more torque on NEW Hex fasteners vs standard hex tools -Up to 400% more torque on damaged fasteners vs standard hex tools -S2 steel for increased strength and durability -Oversized roll stamping and ink-filled size markings for greater visibility