9Pcs Guitar Brass Radian Fret Inserts 7.25/9.5/10/12/14/15/16/17/20 Radius Fingerboard Fret Press Caul Insert for Acoustic/Electric Guitar Electric Bass

Features:
Made of quality brass, durable and wear resistant.
For radius: 7.25/9.5/10/12/14/15/16/17/20.
Mini size, portable to carry.
Easy to use, just place the right insert in the caul.
Easy and accurate fretting on different radiused fretboards.
Suitable for most of guitars, such as electric guitar, acoustic guitar, electric bass, etc.