Edelbrock Performer Carter AFB AVS Metering Rods Size .071 x .047 Sold in Pair

These are 71 x 47, the first number is the cruise number and the second is referred to as the power.057x.049. 063x.037. 063x.047. 065x.037. 065x.047. 065x.052. 065x.057.067x.055. 068x.042. 068x.047. 068x.052. 068x.057. 070x.037. 070x042. 070x.047.