The Park Tool SPA-1 Pin Spanner is a specialized service tool designed to engage round, notched, or slotted retaining rings and threaded collars on bicycles. Whether you’re working on bottom brackets, headsets, or other components that use spanner-style fasteners, this tool gives you secure engagement with minimal risk of slipping or damage. Its precisely machined pins fit into their matching slots or holes, allowing you to apply torque confidently during installation or removal.

Constructed from hardened steel with a comfortable handle, the SPA-1 provides durability and leverage for workshop tasks that require precise control. The compact profile makes it convenient to store in a toolbox or tool roll, yet its robust build ensures it stands up to repeated use. For home mechanics and professional technicians alike, the Park Tool SPA-1 Pin Spanner delivers reliable performance when tackling retaining rings or collars that standard wrenches can’t handle.