Carter AFB, Edelbrock 4 barrel metering rod set. Price includes one metering rod and you will need 2. The AFB carburetor requires two rods per carburetor. These are 2 step rods.

Carburetor Number	Step Up Metering Rod Size	1 Size Lean	2 Size Lean	1 Size Rich
2441s, 2441sa	.0725 x .063	.0725 x .066	.07375 x .068
2448s	.0645 x .058	.066 x .061	.0675 x .064
2507s	.066 x .054 or .066 x .054	.0675 x .056		.06475 x .052
2686s	.0645 x .058	.066 x .061	.0675 x .064
4611s	.065 x .063 x .055
4612s	.0645 x .062 x .055
4615s	.065 x .060 x .053
4616s	.065 x .060 x .053
4617s	.067 x .065 x .055
4618s	.065 x .062 x .053
4639s	.0645 x .062 x .055
4682s	.0635 x .060 x .053
4695s	.051 x .048
4711s	.0645 x .062 x .055