General description Self-tightening drill chuck with an SDS-Plus adapter and key, designed for enhanced flexibility and ease of use. Technical specifications Tightening torque: 1.5 - 13 mm Internal thread: 1/2-20 UNF Material: professional, durable tool steel Compatibility and accessories Compatible with Bosch, Makita, Hilti, Metabo, Atlas Copco drills Compatible with all machines featuring an SDS Plus insert