Cast In Fixing Kit For ST Series Delineator & Chevron Products Risk, warning sign icon set in flat style. Danger caution symbol. This 'cast in cage' can be used for a variety of our ST line bollards, delineators and other marker products. For fresh installations, this is the prefered method of fixing as it is very secure and requires less work. The cage can be fixed into the ground with concrete. This installation method is ideal for areas with soft earth, or where there is no existing concrete to fix into. If you are unsure if this will work with the bollard or marker you are looking to purchase then check the list below for a list of compatible products. Alternatively, go to the product page, and this item will be listed as an additional or related item.