• Made in the USA - Quality and Availability
• Proprietary Steel and Heat Treat Process Yields Greater Strength and Longer Bit Life
• Cutting-edge Machining Process Results in Tighter Tolerances and Superior Product Consistency
• Better and More Consistent Fit to Fasteners Leads to Better Torque Transfer
• Power Bits Are Best Used With Quick-Release (QR series) Chucks

Apex 1/4'' hex power drive Torx bits, tamper resistant with hole center post from ApexFastener Tools, formally Cooper Tools. Tamper resistant Torx screws feature a post in the center of the recess this post will only fit into a tamper resistant Torx bit. Torx fasteners are becoming extremely common in automotive repair and appliance assembly. By design, Torx head screws resist cam-out better than Phillips head or Slotted head screws. Where Phillips heads were designed to cause the driver to cam-out, to prevent over tightening, Torx heads were designed to prevent cam-out. The reason for this was the development of better torque-limiting automatic screwdrivers for use in factories.