Material: 7075 aviation aluminum + rubber

16 inch:
Extended length: 16 inch
Retracted length: about 7 inch
Weight: about 277g

21 inch:
Extended length: 21 inch
Retracted length: about 9 inch
Weight: about 364g

26 inch:
Extended length: 26 inch
Retracted length: about 11 inch
Weight: about 342g

When in use, you only need to hold the handle and throw it out or pull out the telescopic rod manually. When it needs to shrink, Press the button at the bottom with your finger, and push the head with your other hand to retract it.