Comparison : |
Item # CNRW1.81.50, Diamond Negative with ISO Style Hole, thickness 0.104 / 0.110 in Item # CNRW21.50, Diamond Negative with ISO Style Hole, thickness 0.104 / 0.112 in Item # CNRW220, Diamond Negative with ISO Style Hole, thickness 0.136 / 0.142 in Item # CNRW32.50, Diamond Negative with ISO Style Hole, thickness 0.167 / 0.173 in Item # CNRW32.50R/L, Diamond Negative with ISO Style Hole, thickness 0.166 / 0.174 in
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