Ibanez produced the 4449EG61X as a dedicated nut file set for Prestige series electric guitars, offering a matched progression of six files sized to the string gauges common in a standard light electric set.

The set comprises six files, each ground to match a specific string slot width: .010, .013, .017, .026, .036, and .046. This span covers both the plain and wound strings of a standard six-string electric set, allowing a technician to cut or dress each slot to the correct width without resorting to a generic file that risks widening the slot beyond the string diameter.

Owners needing nut slot work — whether cleaning binding slots, adjusting action at the nut, or fitting a replacement nut blank — should consult a qualified guitar technician to ensure correct slot depth and angle are maintained alongside any width work performed with these files.