Size Guide

Use the exact measurement labels shown on each product. A cage length, total length, inner diameter, and ring diameter are different measurements and should not be substituted for one another.

1. Identify the measurement

• Body or cage length: confirm the two endpoints used by the product diagram or written specification.
• Inner diameter: use the clear opening measured across the inside; do not confuse it with circumference.
• Base ring: confirm shape as well as inner diameter when both are selectable.
• Set configuration: check whether one ring, a ring set, a strap, or another component is standard or optional.

2. Keep units attached to the value

Product records retain the units supplied for that product. Do not silently convert, round, or reuse a measurement from a similar-looking item.

3. Resolve conflicts before purchase

If a measurement or option is unclear, contact us with the product link and your chosen configuration before making a decision.