Slotted Maple Fretboard blank
slotted fretboard blanks
flat or radiused
Hard maple fretboard blank
57mm at base
43mm at nut
the 648 by 22 is suitable for a fender
the flat blanks stop at the nut while
the radiused ones continue beyond it.
the best ones are simply the whitest, straightest grained
and most blemish free from each batch that arrives.
any that look a bit iffy are sold in store cheap as seconds
and are not sold online.