Comes with spring retainer. 2 sets each package.
The DU-BRO Spring Steel and Solder Kwik-Links are trusted, high-quality connectors designed to give RC builders a strong, secure, and reliable control linkage system. Whether you prefer the proven durability of spring steel or the clean, easy-to-solder design of nickel-plated connectors, these Kwik-Links deliver smooth, dependable performance for any RC aircraft, car, or boat. Spring Steel Kwik-Links are known for their strength and long-lasting durability. They are ideal for everyday control linkage hook-ups and work perfectly with threaded rods or threaded couplers.
The 2-56 size is made for .072" diameter rods and includes link guards.
The 4-40 size is made for .093" diameter rods and includes spring keepers for a secure hold.
Solder Kwik-Links are nickel plated, giving them a smooth finish that is both strong and easy to solder. This makes them excellent for connections at the servo arm or control horn where a clean, permanent bond is preferred.
The 2-56 solder version fits .072" rods and comes with link guards.
The 4-40 solder version fits .093" rods and includes spring keepers.
Weight per link:
1 gram for #109, #600, #112, #305
1.5 grams for #304, #601, #603, #604
These Kwik-Links are perfect for sport planes, trainers, giant-scale aircraft, and many other RC applications. They help eliminate slop, improve control accuracy, and provide reliable performance through countless flights.
Proudly Made in the USA, DU-BRO Kwik-Links continue to be a favorite among hobbyists for their strength, ease of use, and long-lasting quality.
 "Kwik Link Clevis 4-40 Spring Steel")