M7 and M8 Drill Chuck [2mm, 2.3mm, 3.17mm]

Description:
A chuck is a specialized type of clamp used to hold an object with radial symmetry, especially a cylinder. In drills and mills, it holds the rotating tool whereas in lathes it holds the rotating workpiece.
On a lathe, the chuck is mounted on the spindle which rotates within the headstock. For some purposes (such as drilling) an additional chuck may be mounted on the non-rotating tailstock.
This product is an M8 or M7 drill chuck with a three-jaw head design that can be clamped 0.5mm - 3.2mm range.

Features:
Motor shaft: 3.17mm, 2.3mm, 2mm (Optional)
Brass part outer diameter: 10mm(M8), 9mm(M7) (Optional)
Material: Brass + Aluminum Alloy

Package Include:
1 x M8 and M7 and m Drill Chuck
1 x Allen wrench
2  x M3 install screw