SPIR-O-BITE is a high holding force, slim diameter stop collar for specialist close tolerance applications. With no set screws and quick and simple installation without the need for specialist assembly tools, it is efficient to install. An easy twist on assembly with robust gripping mechanism and no risk of back-off, allows for the SPIR-O-BITEto be fitted to all API casing grade, sizes and tolerance bands. The slim profile ensures the collar can slide through the tightest restrictions, maintain a holding force in excess of conventional set screw type stop collars and the perfect partner for the EXPAND-O-LIZER centralizer family.


  • Simple innovative designSimple innovative design
  • No specialist assembly tooling or personnel required
  • Suitable for all API casing grades, sizes and tolerances
  • Low profile
  • No set screws or loose parts
  • Bi-directional, high holding force
  • Low assembly torque
  • Anti back-off mechanism
  • Simple, quick installation
  • Assemble anywhere
  • Patent pending


  • Dedicated engineering support teamDedicated engineering support team
  • Designed to meet specific application requirements
  • All casing size options available

For specifications, application solutions, and SPIR-O-BITE availability, please contact your local Downhole Products representative.

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