The takedown hole in the guide rod allows for easy disassembly/reassembly. Fits flush with the slide so you can turn the bushing to disassemble the gun.
This tungsten guide rod should be checked by a gunsmith familiar with the 1911 design. It MAY REQUIRE minor fitting to contact the frame evenly. Failure to do so may lead to premature wear and/or breakage.
The head of the guide rod has smooth beveled edges to make for a seamless look.
EGW's STI Guide rods are made specifically for STI models as the button on the end of the guide rod is smaller in diameter than a standard guide rod