Orion dual finder mount. Useful for mounting a finder and a mini guider on the same stalk.
Same as this
https://www.bintel.com.au/product/or...nting-bracket/
Note: I have drilled a centre hole so I can use it with my William Optics finder stalk, but otherwise all pieces are there.
$50 posted in Australia.
PM me if you are interested.
Thanks
Bo