shape in this regard the leg 114 includes an angled portion 122 adjacent the first end 108 the configured opening 120 is formed within the angled portion 122 extending into the first end 108 the t shape of the configured opening 120 is formed by the opening having an enlarged rectangular end 124 although shown and described as t shaped the opening 120 may be of other shapes as will be understood from a further description of the present disclosure for example any shape that will perform a similar function to capture and retain the end of the second shank 104 as to be described may be used referring to fig1 and 3 second end 110 likewise may include a c shaped opening 126 having its longitudinal axis extending in the longitudinal direction of the second leg 116 here again although shown as a c shaped opening 126 the opening can also have other shapes such as j shaped circular or oval shaped and the like the second leg 116 inwardly of the second end 110 includes an angled portion 128 having an opening 130 the opening 130 although illustrated as rectangular can have other geometric or nongeometric shapes which will be understood from a further description of the present disclosure the second shank 104 as shown in fig1 includes a transition region of reduced width generally designated by reference numeral 132 and a pair of space apart first and second ends generally designated by reference numerals 134 and 136 a first leg 138 is generally defined extending between the transition region 132 and the first end 134 likewise.