These arms are 3/4" thick and 17" long overall, making them 15.195" from center of splined hole to center of the farthest 1/2" hole. Sold as a pair.
NOTE: These arms would be the replacement pieces for Jeep JL rear Antirock arms. These arms can be used in conjunction with our RJ-201000-101 double shear end link bracket kit to add 1.5 in. in arm length and the ability to offset the end link up to 1.25 inches.