7 1/2 or 7 1/4 gauge Rail for bench testing or storage.
Also suitable for other live steam gauges where aluminum rail is used.
Not for use at speed, rail has no crown.
Its a plastic rail don't trust it to support a huge load. Great if you don't have any aluminum rail on hand.

7 inches long, scale to your use in slicer.
Printed with a large brim standing on end.

Creality

Ender 3

No

No

200

10