An adjustable location anchor with a greatly increased strength having wide versatility regarding the types of straps or attachments which are usable therewith. The invention includes an extended housing having an interior cavity which includes a main slot and which can include a pair of anterior flanges or wings, wherein the extended housing can be placed into the uncured concrete such that it is rigidly embedded therein upon curing. A sliding insert can then be provided within the interior cavity being configured to slide along a slot formed thereby. The extended housing can also have one or more reinforcement attachment means for connecting to existing concrete reinforcement structures.