Comparison : |
Item # VNRW21.51, Diamond Negative with ISO Style Hole, thickness 0.104 / 0.112 in Item # VNRW221, Diamond Negative with ISO Style Hole, thickness 0.135 / 0.143 in Item # VNRW32.50, Diamond Negative with ISO Style Hole, thickness 0.166 / 0.174 in Item # VNRW330, Diamond Negative with ISO Style Hole, thickness 0.198 / 0.206 in
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