Miniature Electric Drill Brass Collet Electric Drill Bit Chuck Wrench Tool Specification: Drill Clamp models are labelled with the appropriate motor shaft diameter and drill diameter. For example: Drill Clamp 2-1.2mm means that it is suitable for motors with a shaft diameter of 2mm and a drill size of 1.2mm. Note: The first number represents the hole diameter of the drill chuck's buttocks, and the second number represents the maximum range that can be clamped! For example, 2-1.2mm, the aperture diameter of the butt is 2mm, can be used with a 2mm shaft, such as 180 and other motors with 2mm shaft diameter, can be clamped drill bit range of 0.7-1.2mm.
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