Specifications:

[6680W] set (two chains and one guide plate)

[6680W] set (three chains and two guide plates)

[6980W] set (one chain and one guide plate)

[6980W] set (two chains and one guide plate)

[6980W] set (three chains and two guide plates)

[7980W self-grinding] a chain and a guide plate

[7980W self-grinding] two chains and one guide plate

[7980W self-grinding] three chains and two guide plates