This Carbon Fibre Twill (weave) Paddle shaft is used to replace an existing shaft or when building a paddle from scratch
The shaft is at least 140cm and has an external Ø (diameter) of 29.1mm and an internal Ø of 26.7mm
If the shaft inserts into your paddle blade you will be sanding the external surface to help the glue adhere so be aware that it will shrink slightly with this process.
The Internal Ø dimensions are used for
Joiners (i.e. when make a 2 or 4 piece paddle) you will need to buy a spigot that fits.
Your paddle blade inserts inside the shaft. You will need to measure the blade spigot in this case. Note however that you can sand your paddle spigot to make it smaller and you can fill excess gaps with a gap filling glue or resin (should it not be round etc.