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These Centralizer is designed same as Welded Spiral Vane Solid Rigid Centralizer except rows of set screws on the outer periphery of centralizer to limit rotation". It can be easily changed from fixed to non-fixed design by detaching set screws and positioning with stop collars. They are stored painted or coated with polyester powder. Wide symmetrical fins are smoothly beveled on one and the other ends to have lower coefficient of friction and to ease casing movement in either direction.

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