This product is based upon the same operating principle as the ARP-38 but instead of having the lug beneath, this has an insert adaptor that fits inside the vertical leg and is held in place by an appropriate adhesive, rivet or screw. The rail fits on to an adjustable cupped bracket and once the desired angle has been achieved, there is a provision to lock off that angle on the stem of the support bracket by allen key fixing. It has two fixing holes on a diagonal axis.

There is a choice of two models. The first is where the insert bracket fits flush with the top of the vertical leg when it is inserted. The alternative model is practically the same, the only difference is this model has a inbuilt collar that will hide any rough end cut or scorch mark on the top of the cut leg.