Graph Tech PRL 8521 C7 Ratio Electric Locking Machine Heads

Graph Tech PRL 8521 C7 Ratio Electric Locking Machine Heads with Contemporary knob - 7-String, 4 + 3 - Chrome
Product no: 9000-0143-8819

Product information

General

The Graph Tech PRL-8521-C7 Ratio Electric Locking Machine Heads are designed for 7-string electric guitars with a 4 + 3 configuration. Each tuning knob has a specific gear ratio, providing faster and more accurate tuning. The knobs feature a thumbwheel system that allows you to lock the strings for extra stability. With their chrome finish and modern knob style, they perfectly match any guitar. This set includes 7 tuning heads with 4 on the left and 3 on the right, including mounting plates for easy installation.

Specifications

Product features

Sustainable product: Not specified
Number of mechanisms: 7
Mechanism configuration: 4 left + 3 right
Ratio: Multiple
Mechanism finish: Chrome
Mechanism type: Locking
Mechanism shape: Other

Weight and dimensions including packaging

Weight: 200 gr
Dimensions: 20,0 x 9,0 x 5,0 cm

Product specifications

7-piece set: 4x left, 3x right
Closed construction
Adjusted gear ratios per string
- E string: 12:1
- B string: 20:1
- G string: 35:1
- D string: 20:1
- A string: 24:1
- E string: 39:1
- B string: 48:1
Direction of rotation: right (3 pieces), left (4 pieces)
2-pin mounting
Shaft diameter without mounting sleeve: 5.9 mm
Mounting diameter with mounting sleeve: 9.8 mm
Including 4 sets of InvisoMatch mounting plates for existing screw holes
Weight per tuning head: approx. 37.75 g
Mini Contemporary knob
Chrome finish