The Swenson Barrel Link Kit are high quality replacement components designed to the strict specifications of your 1911 pistol. Swenson 1911 parts are reliable and withstand the stress of constant use to keep your pistol functioning. Choose Swenson parts when customizing your pistol or replacing worn or broken parts. Part may require fitting to your specific gun. Link Sizes Included in Kit#1- 0.268" center to center#2- 0.273" center to center#3- 0.278" center to center; industry standard G.I. Spec#4- 0.283" center to center#5- 0.288" center to center