Ready for your next project is a single 4 string slotted bone nut for your jazz bass. 
Do not settle for plastic. A bone nut is a simple and inexpensive way to greatly improve the tone and sustain of your guitar or bass plus the last much longer than ABS. We only use bone or sometimes brass on our own builds. This nut is pre slotted and sized 1.5" wide for J style basses. Check your measurement requirements, can be compatible with other modern styles as well. Ready to install,  ut may need some light shaping, filing and or shimming for your particular bass and string height preferences. Whether you're building a brand new custom bass or replacing your old worn out nut, bone is the way to go to get the most out of your strings. See our listings for other SGM parts and luthier supply. 
Size: 1.5", 0.2" height, 0.13" 
(38mm x 5mm x 3.5mm
Nuts may vary ever so slightly in color. It is bone after all.