Okeeyseda Luthier Tools Set Guitar Fret Caul Fingerboard Pressing Tool + 9Pcs Brass Radian Fret Inserts with Hex Wrench

Great for electric guitar/ luthiers repair tool. The groove on side to prevent the fingerboard wire from sliding off, and marks on the inserts, easy to identify and use. High quality brass material, electroplated finished, bright and shiny, long service life. Help you to in frets on any string instrument. Just place the right insert in the caul. Pressing frets into a guitar fretboard has the advantage over hammering that the entire fret is pressed in one operation, eliminating the possibility that an end not be seated right, or the hammering could cause the fretwire to deform.