JCS Offset Rail clamp only for 7/8" receivers. Used in all the 7/8" JCS Rail Kit Accessory Mounting Rails. This offset clamp mounts to 7/8" MIL-STD rails. Gap on rail (that this clamp mounts to) must be 0.204 inch minimum width.
Quantity is 1. Some rail sizes require 2 clamp kits. Used in JCS 73251, 73250, and 73249 rail accessory kits.