model:
HA type (7 block group)
HD type (3-block group)
Brand: Kuang Kuang's hardness block
Name: Standard Shore hardness block
Specifications: 50×50X7MM (7 block group A type)
HA type (7 block group)
Brand: Kuang Kuang's hardness block
Name: Standard Shore hardness block
Specifications: 50×50×7MM (3-block group D-type)
HD type (3-block group)