I just clicked on the link I mentioned above to make sure it still worked, (it does!), and, as you can see from the pictures, these Evotech versions appear identical to the DP ones, (Evotech above, DP below).
The Evotech site has a picture showing the size and I checked this against my DP ones and, as you can see, they're pretty much identical.
The Evotech ones are only about £30 per pair but, be aware, you'd need to add 10W resistors and some adapter plates to complete the set. (You can see these extras in the DP photo). The resistors and adaptors are cheap enough though. E.g.
https://www.ebay.co.uk/itm/Adapter-P...-/361675100697
https://www.ebay.co.uk/itm/Adapter-C...0/133099459697