Bosch Mandrino Cromato Senza Chiave Trapano Senza Fili Milwaukee DEWALT 20 Volt 20 V
Removed from a new never used Bosch DDH181-01 18V drill. Chuck hole is a 1/2" 20 thread. Works great for many standard drills with 1/2"-20 spindle. This chuck pulls down nice and has a superior lock.