These are 2-56 Spring Steel Kwik Links for .072" diameter wire. Steel construction Nickel plated Two Kwik Links with link guards (retainers) 1" long. Spring Steel Kwik-Links are the tried and true top quality kwik-link. Ideal for any control linkage and hook-up. Use with threaded rods or threaded couplers. Solder Kwik-Links are nickel plated making a strong, attractive and easy to solder connector for servo or horn. tjt 041002 ir/kh &