Omega Products DV40 MLC Synchro Tapping Chuck ER32 - DIN69871 - M4 - M27These chucks feature a synchro tapping mechanism that ensures synchronous rotation between the chuck and the spindle, eliminating the risk of thread damage and increasing tapping accuracy. With the DV40 size, they are compatible with a wide range of machine spindles. The robust construction and high quality materials ensure durability and long lasting performance. The chucks are easy to install and operate, allowing for quick and seamless tool changes.