This is a spare new replacement Part I for the Bestway Steel Pro 2.21m x 1.50m x 43cm Frame Above Ground Rectangular Pool.  Part I is one of the four T-plastic connectors that connect the four mid-mounted poles F (legs) to the horizontal structure.  The second picture is a labelled diagram of this pool.  Please study it carefully before purchasing to ensure that you have selected the correct part.  Condition is New.  Described as T-Plastic Connector under part no. P61015ASS16.