Extension Acoustic Guitar Nut For Guitar Lap Steel Slide Conversion Designed to fit over a standard 6-string guitar nut, this extender raises the strings to allow playing with a steel bar, Dobro-style. No need to modify the instrument or install a new nut; simply remove it for standard playing. Made of nickel-plated steel Notched for 1-23/32" (43.66mm) string spread Available at Ant Hill Music!