Mychron 3/4" Jackshaft speed sensor collar

Mychron Jackshaft speed sensor collarA MyChron jackshaft speed sensor collar with a 3/4" (0.75" or 19.05mm) inner diameter (ID) is a component designed to be mounted on a junior dragster's jackshaft to enable the measurement of jackshaft speed using an AIM MyChron speed sensor. It typically includes a magnet embedded within the collar that triggers the sensor. The collar is designed to slide onto the jackshaft and be secured with a setscrew (included) according to Pegasus Auto Racing Supplies. Key features: Purpose: Measures jackshaft speed for junior dragsters. Inner Diameter (ID): 3/4" (0.75"). Material: Typically aluminum. Includes Magnet: A magnet is embedded in the collar to trigger the speed sensor says Pegasus Auto Racing Supplies. Mounting: Slides onto the jackshaft and is secured with a setscrew (included). Compatibility: Designed to work with AIM MyChron speed sensors.