this is the fletching they are roster feathers, they work quite well

they look pretty good.

Do they fly well? im assuming you made that arrow out of a dow joint?

no, a dow joint is a piece of wood that is a straight,  pre made from what ever wood you like from the hardware store. Then, you can make the dow joint into an arrow shaft by putting the flething on.  It saves people from making arrow shafts from logs and branches.

I think the word you're looking for is "dowel".    Good dowel wood is hard to come by...Used to be the big hardware stores would carry "hardwood dowels" that were made of an Indonesian hardwood, Ramin.    Alas, no more...The tree is nearly extinct.

The only way to make good arrows from these dowels is to buy a ton of them and check them for grain structure and then sort them by spine.   You'd throw away most....

Better to just buy arrow-shaft material from an archery supplier.   All nicely spined and such for about 30.00 per dozen.

You can make your own, of course, but it's a bit of work.  You have to split straight-grained cedar, then work the square shafts down with a special planing jig, and then work them further using a spine tester to get arrows that shoot consistently.

Bamboo is used for arrows, but it works best if split and glued together as the Japanese used to.  A lot of work.    A better material is "River Cane" which grows wild over much of the states.   It's a thick-walled reed, related to bamboo, and it's pretty easy to reduce the nodes with a sharp knife and straighten over heat.