Length: 29.53” / 750mm
For Range: 1.4” - 2.4” / 35 - 50mm 2” - 6” / 50 - 160mm
After the installation can be used to measure deep hole size.
Extension rod length can be up to 40" / 1000mm.
The use of single long extension rod will be better than connecting of multiple short extension rod.
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