Graph Tech PRL 8521 B7 Ratio Electric Locking Machine Heads with Contemporary knob - 7-String, 4 + 3 - Black

The Graph Tech PRL-8521-B7 Ratio locking machine heads are ideal for 7-string electric guitars. With a sealed construction and a unique gear ratio for each string, they offer a fast and precise tuning experience. The InvisoMatch mounting plates allow you to use existing screw holes, making installation easy. The mini contemporary knobs provide a stylish look, and the black finish gives a modern look to your instrument.