Replace your alloy factory ejector rod housing with this all-steel polished and blued unit. This beautiful upgrade is installed by removing and replacing one screw. Available in two sizes. The 1/4" housing screw is found on older Super Blackhawks and on some 41 and 45 caliber old and new model Blackhawks. Please measure the screw head diameter in your revolver before ordering. These housings will not fit Bearcat or 357 Maximum caliber guns.