Adaptor sleeves for struts

the 450 rebel arrives later this week & Im planning the conversion so I can get into it straight away...
the bike is gonna be hardtailed / lowered with struts, Im planning to use a pair of sportster struts as obviously those are close to hand given that I keep them as a stock item, also apparently the 10" xl struts are about the right height.
the thing is that the holes in the struts are half inch, & i imagine that the rebel shock bolt sizes will be metric.
so what i need is sleeves that will be 1/2" (about 12.5mm?) on the outside & ?mm on the inside (maybe 10mm Im guessing?)
Is there any kind of tubing that would do this, or do I need someone to turn something out for me?
If they need making/turning I can pay, or swap for bits.
cheers

Give me a drawing with measurements and I can bang up some on a lathe out of a large steel slug.

Could even just send you a rod with the correct OD and ID and you can cut it down to the lengths you need

sweet. i will know either late this week or early next week, will get in touch. cheers.

One thing that's always kept me from going the way of struts (other than the fact I'd then be riding a hard tail which chicks just don't like),

Wouldn't attaching the struts to the mounting points the suspension would normally go end up putting a huge strain on those points? I know on my bike, the top part of the suspension slots over a nub welded to the side of the frame and the bottom slots through a piece welded onto the swing arm.

I would have thought the nub at the very least would be at risk of cracking and coming apart.

yeah there would definitely be extra strain there. Good to have regular visual checks of the area. I asked some US rebel fanatics online & they reckon the 450 swingarm & frame is considerably beefier than the 250 one.
anyway, that's why I've called it a bar hopper will be more for looks & local riding than for long distance
it's been delayed by a week cos they missed the weekly truck goin thru, cos they have to get the rear tyre replaced for the new wof. so looks like next week sometime now