GRIPEDGE - “ITS ALL ABOUT THE GRIP” GRIPEDGE RPT (Rounding Prevention Technology) Star bit sockets are designed to replaced standard Star tools. RPT Technology provides up 50% more prevention torque on good fasteners vs standard tools, whilst applying up to 400% more torque on damaged fasteners vs standard tools. The unique, patented, & bi-directional geometry prevents the rounding of good fasteners whilst being able to removed extremely compromised fasteners. Compromised fasteners can be re-inserted in a pinch if a suitable replacement is not available. Each bit is precision machined from S2 steel for increased strength and durability as well as coated for increased corrosion resistance. All sockets have oversize, roll stamped, and ink filled size markings for greater visibility and nickel chrome plating ensures corrosion resistance.