Russian guitar usually differs from the wood in the rest of the neck. The neck joint or heel is the point at which the neck is attached to the body of the guitar. The fingerboard is made of hardwood (ebony or rosewood are common), fitted with metal frets of brass or steel. Fret spacing almost always follows the western twelve tone equal temperament (12-tet) system. The surface of the fingerboard may be flat or curved slightly ("radiused"), although the curve on the Russian guitar is usually somewhat less than that of an equivalent western 6-string guitar. Inlayed position markers are common, and
Ibanez RG a neck that is very thin in cross-section a wide, flatter than most (430mm/16.9in or 400mm/15.75in radius) double octave (24 fret) fretboard. Flatter radius on fretboards facilitate wider bends and lower string action at the expense of comfort in playing chords. For the virtuosic "shred" style of guitar playing or fast, aggressive thrash/speed metal rhythm, this type of neck is often preferred. The fretboards are usually made of maple or rosewood. The body of the RG Series features sleek, offset pointed double cutaways giving better access to the upper frets. Typically the body is made of Basswood or Mahogany, with