7x0.75 0.3-3.2mm Bit Short Adapter M7 Chuck Drill for Dremel Grinding

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

Specifications:
Material:plastic+metal
Short chuck size:1.8x1.4cm(L x W)
Long chuck Size:2.2x1.1cm(L x W)
Inner Diameter:0.6cm
Gripping range:0.3-3.2mm(M7)
Gripping range:0.3-3.5mm(M8)

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.
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