the attachment member 8 and the hole b 3 of the teeth adapter b 1 to secure the receiver 3 b to the bucket b 0022 fig4 illustrates an alternative embodiment of the present invention further comprising a center receiver 18 in addition to the previously described left receiver 3 a and right receiver 3 b the center receiver 18 comprises a plate 19 to which may be attached one or more attachment members not seen in the view of fig4 in the same manner as previously described for the left receiver 3 a and right receiver 3 b the center receiver 18 attaches to one or more of the bucket adapters b 4 by insertion of pins through holes formed in the attachment members and the holes b 5 in the bucket adapters b 4 as previously described the edge member 1 is attached to the left receiver 3 a and right receiver 3 b in the manner previously described in fig1 3 the edge member 1 is also attached to the center receiver 18 by positioning the plow bolts 20 through holes 21 formed through the edge member 1 through slots 22 formed in the center receiver 18 through flat washers 23 and then through threaded nuts 24.