Link mounts for 1 3/4" tubing. These are sold as a pair and are offset for 10 degrees of angle. These would be useful for upper link mounts mounted to heavy wall DOM tubing and your wanting to point the links out or in at an angle. Sold as a pair drilled to 5/8" but could be drilled to what ever size you are working with. Please let us know in the comment box on your order.