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Why the difference change in the cup sizes of Turnlock HGR?

Dear Customer.

Your old part has a larger cup size with the same length number 8. The change goes until length 15, the old series have a larger spring cup size.

The new Turnlock from length 1-15  has a smaller spring cup size. Already from 2012.

Parts are equal in fit and function. Due to the cup change, it is advised to start using a retaining washer from length number 5 instead of length number 16.

difference change in the cup sizes of Turnlock HGR