Features:
Military spec GI national match 1911 bushing
Held to a tighter tolerance than a production GI Mil-Spec bushing
Machined from 4140 heat treated steel
O.D. is .6985"
I.D. is .577"
Face is engraved: "NM7267718"

Modification of your firearm may nullify the manufacturer's warranty.
This product should be installed and checked by a qualified gunsmith.
No liability is expressed or implied for damage or injury which may result from improper installation or use of this product.