M7 M8 Keyless Chuck Drill Bit Short Adapter 0.5-3.2mm For Grinding Rotary Tools

The meaning of the 7x0.75/8x0.75: 7/8 refers to the grinding
machine shaft outer diameter is 7mm/8mm, 0.75 is screw thread
pitch 0.75mm, your grinding machine shaft outer diameter
measurements is 7mm or 8mm, you can consider it.

Specifications:
Material:plastic+metal
Size:1.7x1.1cm(L x W)
Inner Diameter:0.6cm
Gripping range:0.5-3.2mm

How to choose the length of the chuck:
1.If your drill rod diameter is relatively small,
you can choose the long tail.
2 if you drill diameter is relatively large size (close
to 3.2mm), Long and short also can be used.

Package include:
1x Chuck For Grinding
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