MoonDrop MIS Tip T41 Sponge Eartips (2 Pairs) - Premium Comfort Ear Tips for In-Ear Monitors - Perfect for Music Lovers, Audiophiles & Workout Enthusiasts

Inside diameter: 4.1mm, L/M/S
Outer diameter is about (mm):
S: 10 M: 11 L: 12

The T41 is suitable for Earphones with a catheter diameter (widest) of 4.4-5.8 mm.

The T41 is suitable for Earphones that use a single dynamic unit such as KXXS/Spaceship/Starfield/MiRai