Boat trailer roller 180mm

I'm printing 8 of these out for my trailer using abs with 5% infill 4 outer walls, 4 base and 5 top walls.
180mm long
65mm in diameter outside and the center is 55mm in diameter.
The hole is 13.5mm wide to take a M12 Gal bolt.



People use this at there own descretion, I am using for a trailer to hold a 3.8m inflatable Zodiac style boat with a 15hp engine.