For greater freedom of instruments and control systems, Miniature Universal Joints have zero backlash with continuous contact in either direction to provide accurate transmission in any application. Because of their light weight and consequent low moment of inertia, they also provide sensitive control. Lightweight Type 303 stainless steel body with Type 440 stainless steel balls has dual protection lubrication, with sealed in solid film plus oil suspension. Requires set screw or pin to secure to shaft. Set screws not supplied. Available in four types: Single; Double; Telescoping Double, which allows longitudinal adjustment through a preloaded Ball Spline; and Ball Spline Assembly to transmit torque and permit telescoping motion. These assemblies are useful in linear slide applications or as components for a custom telescoping universal joint.