These are Riser Legs for the Alesis Forge Electronic Drum Set.
They stand 138mm tall and will raise the drum set by 88mm.

I found that the set was too short for an adult like me, and these brought it up to a perfect height.

you will need to remove the Rubber feet that are on the ends of the tubes, and I also used electric tape to secure the ones called "Riser Plain"

I did make a clamping version called "Riser Final" which requires 2 x M4 nuts and bolts for each clamp. supports were needed for this version.

I printed with 0.3mm layer height and 10% Rectilinear infill.
Material is PLA

Anycubic

All-metal Mega

No

Yes

0.3

10% Rectilinear