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SKU:Guitar tuner-GK-510-D73FL-gold3R3L
PRODUCT DESCRIPTION
Upgrade compatible 3R+3L electric guitars with front locking tuning machines designed for faster string changes and stable tuning setup. The Guyker GK-510D73FL set features a 1:21 gear ratio, 9.8mm peg hole requirement, and screw-in hex head bushings for electric guitar replacement and upgrade projects.
Key Features
- Front locking design: Helps make string changes faster and can improve tuning stability by reducing string slippage.
- 3R+3L layout: Designed for compatible electric guitar headstocks that use a 3-right and 3-left tuning machine arrangement.
- 1:21 gear ratio: Provides fine tuning control for careful setup and adjustment.
- 9.8mm peg hole requirement: Suitable for compatible headstocks with matching tuner hole dimensions.
- Complete mounting set: Includes tuning machines, threaded bushings, mounting screws, and ferrules.
- Fitment reminder: Please confirm your peg hole diameter, post height, bushing size, and mounting screw position before ordering.
Technical Specifications
| SKU / Model | GK-510D73FL |
| Product Type | Front Locking Guitar Tuning Machines |
| Suitable For | Compatible 3R+3L electric guitar headstocks |
| Layout | 3R+3L |
| Locking Type | Front locking |
| Gear Ratio | 1:21 |
| Peg Hole Requirement | 9.8mm |
| Weight | 38g per pc / 228g per set |
| String Post Diameter | 6mm |
| Max String Gauge | 1.8mm |
| String Thru Hole Center Height | 21mm |
| Bushing Type | Screw-in hex head |
| Finish Options | Chrome, Gold, Chrome + Wood Button |
| Package Includes | 6 x tuning machines, 6 x threaded bushings, 6 x mounting screws, 6 x ferrules |
Compatibility Notes
Important: Please confirm your guitar’s peg hole diameter, post height, bushing size, headstock layout, and mounting screw position before ordering. Guitar models may vary by production year, factory, and region.
Package Includes
- 6 x Guitar machine heads
- 6 x Threaded bushings
- 6 x Mounting screws
- 6 x Ferrules
Installation Note
Before installation: Compare the tuner dimensions with your original tuning machines and check the screw position before drilling or tightening. Professional installation is recommended if modification is required.
Size Reference
Important: Please refer to the size chart below and compare all dimensions with your original tuning machines before ordering.


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FAQS
Do you class a reverse headstock guitar as a left hand guitar?
How do I determine the right size/fit for a specific accessory?
Can you provide more details about the materials used in your products?
At Guyker, we prioritize the use of high-quality materials to ensure the durability and performance of our products. While the specific materials used may vary depending on the accessory, we commonly utilize materials such as:
■ Metals: We often use materials like stainless steel, aluminum, and brass for hardware, bridges, and other metal components.
■ Plastics: Certain accessories may incorporate durable and impact-resistant plastics such as ABS or polycarbonate for knobs, pickguards, and other components.
■ Woods: Some accessories, like guitar knobs or picks, may be made from various types of wood, including rosewood, ebony, or maple.
For more detailed information about the materials used in a specific product, we recommend reviewing the product descriptions or reaching out to our customer support team at [support@guyker.com] for further clarification.
Do you offer international shipping?
Yes, we offer international shipping to customers worldwide. When placing your order, please ensure that you provide accurate international shipping information, including your complete address and contact details.
Please note that international shipping may be subject to customs duties, taxes, and additional fees imposed by the destination country. These charges are the responsibility of the recipient and may vary depending on the country's customs policies.
What is your process for returning or exchanging a product?
To initiate a return or exchange, please follow these steps:
■ Contact our customer support team at [support@guyker.com] or visit our website's Returns/Exchanges page.
■ Provide your order details and the reason for the return or exchange.
■ Our customer support team will guide you through the process and provide you with a return/exchange authorization if applicable.
■ Follow the instructions provided, including packaging the product securely and attaching the necessary labels or documentation.
■ Ship the product back to us using a traceable and insured shipping method.
■ Once we receive the returned product and verify its condition, we will process the return or exchange accordingly.
Can I return or exchange a product if it's been used?
In most cases, products that have been used or show signs of wear may not be eligible for return or exchange unless there is a defect or error on our part. We recommend reviewing our specific return/exchange policy or contacting our customer support team at [support@guyker.com] to determine the eligibility of your particular product.
Do I need to cover the return shipping costs?
The responsibility for return shipping costs may vary depending on the reason for the return or exchange. In some cases, such as if the product is defective or if we made an error, we will provide a prepaid shipping label or reimburse your return shipping costs. However, if the return or exchange is due to a change of mind or a non-defective product, you may be responsible for the return shipping costs. We recommend reviewing our return/exchange policy or contacting our customer support team at [support@guyker.com] for specific details regarding return shipping costs.

GK-510D73FL Guitar Front Locking Tuning Pegs
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