4mm - 1/4" Hex Dr TMP PRF RPT Hex Bit

• Patented and unique bi-directional design enables loosening & tightening of new and damaged fasteners
• R.P.T. Technology is designed to prevent rounding of new and compromised fasteners
• R.P.T. Technology provides up to 50% more torque on NEW fasteners
• R.P.T. Technology provides up to 400% more torque on damaged fasteners
• Bits are precision machined from S2 steel for increased strength and durability
• Bits have laser etched size markings for easy identification