This is where to post your more serious general questions and discuss caravan related topics not covered by other sub-forums.
Please use specifically named forums where possible in preference to Caravan Chat as this make it easier for members browsing a topic.
I've used a Pyramid Chock master for a number of years and it's a good piece of kit. As someone ^^ said you only need one for a single axle van.
They now sell under the Streetwize brand. https://www.amazon.co.uk/Streetwize-LWACC33-Chock-Master-Full/dp/B00BP9TDL2
It is clear from the link to your Facebook page and from your own admission that you are a business.
We have strict T&C’s regarding trade people using the forum to advertise or promote their products.
Topic now closed.