“+” H3x3" H5x5" H1/4"x6"
“-” H3x3" H5x5" H1/4"x6"
“+”“-” H1/4x1.5"
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“+” H1/4"x4" H1/4"x6" H5x3" H5x4"
“-” H1/4x4" H8x8"