Categories›Guitars›Graph Tech PRL 8721 B0 Ratio Electric Locking Machine Heads with mini contemporary button, 6-in-line, bass side, left, black
Updated 15 May 2026
| Brand | Graph Tech |
| Category | Guitars |
| Available at | 1 UK stores |
| 90-day avg | £139.50 |
Graph Tech
Graph Tech PRL 8721 B0 Ratio Electric Locking Machine Heads with mini contemporary button, 6-in-line, bass side, left, black
£140.00£156.00↓ 10% offFair Price
Cheapest at Bax · 1 store
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PRICE HISTORY
Current
£143
Change
+12.1%
Avg
£135
Low
£126
High
£143
Volatility
3.2%
PRODUCT DESCRIPTION
- The Graph Tech PRL-8721-B0 Ratio locking machine heads are ideal for the bass side of an electric guitar (left). These high-quality tuning machines offer accurate tuning, thanks to the unique gear ratio system. Each tuning knob has a different ratio, so you change a semitone with one half-turn of the knob, ensuring quick and accurate results. The 6-in-line arrangement makes them suitable for specific electric guitar models with this configuration.