This is a pair of Dubro Heavy Duty Ball Links 4-40. These Heavy Duty Ball Links are blue colored and come with Hardware included, (2). These Heavy Duty Ball Links thread onto 4-40 rods for more reliable control.
Nylon ball links with pre-installed brass balls
Two heavy duty ball ends
Two 4-40 x 5/8" caphead screws
Two brass standoffs
Two 4-40 nylon locknuts
Installation onto pushrods
Length of ball end: 27mm (1.06")