Keyless Hand Drill Chuck 12?20UNF Mount 2~13mm Self Tighten Drill Chuck for Multiple Purposes

Features: The chuck can hold the drill bit tightly and sturdy,not easy to loose. Durable and has long service life,suitable for long time work. Easy to install and disassemble,more convenient and laborsaving. Large range of clamp size which range from 2~13mm,suitable for many kinds of drill bit. Keyless and selftighten type design is more in accordance with human engineering. Specification: Diameter:43mm1.69in Length:58mm2.28in (35mm tolerance) Connection Size:1220UNF Clamp Range:2 ~ 13mm 0.04 ~ 0.51in Package List: 1 x Drill Chuck . Note: Before purchase, it is necessary to verify whether the connecting thread of your electric drill is 1220UNF. (12 20 is the definition of thread specification. Specification: 12; number of threads (T): 20. UNF, UN is the standard code of inch thread, and F is fine thread).