Comparison : |
Item # SNRW2.51.50, Square Negative with ISO Style Hole, thickness 0.104 / 0.112 in Item # SNRW2.520, Square Negative with ISO Style Hole, thickness 0.135 / 0.143 in Item # SNRW2.530, Square Negative with ISO Style Hole, thickness 0.198 / 0.206 in Item # SNRW21.50, Square Negative with ISO Style Hole, thickness 0.104 / 0.112 in Item # SNRW220, Square Negative with ISO Style Hole, thickness 0.135 / 0.143 in
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