Also known as bowed E-style rings, these have a curved design that works like a spring, taking up play for a tight hold.

These rings are reinforced to withstand faster rotation than other side‐mount retaining rings. Also known as reinforced E‐style rings.

Slide these rings into a groove near the end of the shaft and the tab locks them in place.

Also known as E-Style and C-style rings, slide these into the groove from the side of the shaft. They provide a wider shoulder than other external retaining rings for a larger retaining surface.