Here's a HAND MADE nut blank carved from genuine aged bone- not bleached white- Nothing beats bone for ultimate tone or sustain. These are traditional CURVED USA strat/tele nut blanks- 51mm wide and 3mm thick- They have a consistent height of 4.75mm. These have the traditional 7.25" radius. This is real bison bone- which is very dense and has a nice "aged" patina to it. As with ANY guitar nut a substantial amount of hand fitting is often required, and even though the slots are molded you will need to hand-file the slots to meet your particular playing requirements.