| Comparison : |
Item # SER631, Square Positive, thickness 0.198 / 0.206 in
Item # DWG#U-4487, Square Positive, thickness 0.135 / 0.140 in
Item # SERN43AFN, Square Positive, thickness 0.198 / 0.206 in
Item # SERN53AFN, Square Positive, thickness 0.198 / 0.206 in
Item # SPR320, Square Positive, thickness 0.135 / 0.143 in
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