Faithfull Chuck & Key 13Mm Capacity 1/2 X 20 Unf Thread | Faichuck12 Classic keyed 3-jaw design Securely holds a wide range of twist drills and step drill bits For light hammer drills of all makes with SDS-Plus and hammers top 13mm Capacity 1/2 x 20 UNF Thread Faithfull Chuck & Key 13Mm Capacity 1/2 X 20 Unf Thread | Faichuck12 Faithfull heavy-Duty keyed chuck for use on both Rotary and Impact drills. Fitted with an anti-thrust bearing to increase the amount of grip and to prevent slipping when under load. Designed in accordance with DIN 6349The FAICHUCK12 comes complete with key and adaptor for use with SDS and SDS Plus machines. Features Constructed with all metal for supreme durability Quickly connects to impact driver and converts to drilling function Easily and securely to install a wide range of twist drills with 1-13mm shanks Built with all-metal construction for maximum durability Compatible with impact drill and different power tool electric drill Well perfect for drilling machines, suitable for centering, drilling, tapping, reaming operation.