Comparison : |
Item # PHT-950-25, Phase II Shore A Test Block Kit Item # PHT-975-25, Phase II Shore D Test Block Kit Item # 15-809-7, SPI 20 HSD to 90 HSD Hardness Shore D Scale Calibration Test Block Kit Item # 15-138-1, SPI Shore A Scale, 30 HA to 90 HA Hardness Calibration Test Block Kit
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