Bosch 2608572150 Chuck Keyless 1.5 to 13mm 1/2in x 20 UNF Chrome P...

Bosch Chuck Keyless 1/4in Hex Shank - Bosch 2608572150, These Keyless Chucks from Bosch have 1/4in. (6.3mm) hexagonal shanks. Keyless chuck, matt chrome-plated 1.5 - 13 mm, 1/2" - 20, suitable for GSB 20-2; GSB 20-2 RCE; GSB 20-2 RE; GSB 20-2 RET; GSB 21-2 RE Professional; PSB 850; PSB 1000; PSB 1200. Bosch 2608572150 Chuck Keyless 1.5 to 13mm 1/2in x 20 UNF Chrome Plated

Price: 63.73 from Rapid Online Rapid Electronics Ltd.