OTTO DIY V2 Korean Style Silicon Insert Kit

This is a replacement silicone insert set exclusively for V2 Kit.
These change in tension (tighter feel) as the number increases.

Contents

V2 White Core - replaces the existing red core included in the V2 kit.
・Red 40-Minimum tension
・Orange 50
・Green 60
・Blue 70

Please note that this product is not covered by warranty.