Hardness Tester, 20-70 HRC Hardness Block HRC/HRA/HRB Hardness Tester Standard Block Hardness Standard Test Block(50-55HRC)

Hardness Tester, 20-70 HRC Hardness Block HRC/HRA/HRB Hardness Tester Standard Block Hardness Standard Test Block(50-55HRC)

QLNZAGVFRDE

60-70HRC (ring alloy) 50-55HRC (ring alloy) 40-50HRC (ring alloy) 30-35HRC (ring alloy) 20-30HRC (ring alloy), Manufacturer: QLNZAGVFRDE

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