MRC:
Those unusual or unique characteristics or qualities of an item not covered in the other requirements and which are determined to be essential for identification.FEAT
Special Features:
Mounting plate has through hole located through side of plate along beveled edged length that begins at a 0.570 inch diameter for 0.570 inches in length then changes to a 0.310 inch diameter for 0.625 inches in length, and then changes to a 0.136 inch diameter for 0.770 inches in length; mounting plate also has cut out area on same length edge, centrally located for a length of 0.255 inches and a width of 0.490 inches and a depth of 0.600 inches