can you tell me please were can I get 7/8” Hexagonal bar and 7/8” Hexagonal tube I have a Honda f510 rotavator and last week going to the garden there is pot hole’s just about all over with the wheel’s close together if you hit a hole the rotavator will go to the left or right I know you will say fill the hole’s in but you got car’s truck’s going up and down all day the road is not tarmac it’s more like hardcore the bar and tube is for to extend the wheels so it will not go over the bar and tube I would need is about six inches long. some time's i am like Ben Hur going to the garden.