Jacobs  Keyless Drill Chuck  13MM For Hitachi Makita Dewalt 
    Features:
    Product Type :
    Metal Double Sleeve With Lock Function
    1/2" X 20 UNF Female Mount
    1.5 - 13mm Drill Capacity
    Weight :11.6 OZ
    *Please note,anticlockwise screw NOT included
    Double sleeve chuck will suit drill without spindle lock.
    With audible click sound when chuck fully locked.
    with a hole in the rear for counterclockwise screw to lock it in the shaft.
    Professional high quality replacement chuck. Recommended for professional grade
    DC/AC rotary/hammer drills.
    Hardened steel, 3 heat-treated jaws bites reduce bit slippage and enhances wear
    resistance, even in the most demanding applications.
    Patented technology provides a positive locking mechanism which prevents loosening in
    hammer and other high vibration applications.

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