https://vault1.secured-url.com/ecommerce/atonic1/nuco/cart/proddetail.asp?prod=rawlbolts&cat=34
these work extremely well and out last most traditional type fixings too - Combined with stevejos chemical cement they wont be going anywhere !!!
The top bracket on A T&K should ideally be at least three brick courses from the top of the wall as they tend to loosen and crack the mortar in my opinion .
Thanks ! i already have those installed not sure if i could get these out and fill the hole with the chemical fixing ?