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The German marine equipment manufacturer HERM. SPRENGER (HS) has modernised and updated his program with the new S-Serie of blocks.
The breaking load was continuously increased and modern needle bearing blocks developed, which combine the positive properties of ball bearing blocks as well as those of slide bearing blocks.
Needle bearings ensure the least frictional resistance even at high loads and are thereby a very robust and multi-purpose alternative to ball bearing blocks.

The swivel shackles of the swivel blocks can be locked into different positions with a screwdriver.

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