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SKU:Guitar Tuners-GK-501D6CSP-6R
PRODUCT DESCRIPTION
Upgrade your electric guitar with Guyker GK-501D6SP locking tuning pegs designed for smooth 1:18 tuning control, faster string changes, and secure string installation. This tuner series is available in multiple layout options for compatible electric guitar replacement, repair, and custom build projects using 10 mm tuner holes.
Key Features
- Locking tuner design: Helps make string installation faster and can reduce string slippage during regular playing.
- 1:18 gear ratio: Provides smooth and precise tuning adjustment for setup work and everyday playing.
- Multiple layout options: Available in 6R, 6L, 3R+3L, 1R, and 1L configurations for different headstock layouts.
- 10 mm peg hole fit: Designed for many modern electric guitar headstocks with compatible 10 mm tuner holes.
- Complete installation hardware: Includes screw-in hex head bushings, ferrules, and mounting screws for installation.
- Fitment reminder: Please verify your peg hole size, headstock layout, mounting style, post diameter, and screw position before ordering.
Technical Specifications
| SKU / Model | GK-501D6SP |
| Product Type | Locking Tuning Pegs / Guitar Machine Heads |
| Suitable For | Electric guitars with compatible 10 mm tuner holes and matching layout |
| Configuration Options | 6R, 6L, 3R+3L, 1R, 1L |
| Gear Ratio | 1:18 |
| Peg Hole Requirement | 10 mm |
| String Post Overall Height | 22 mm |
| String Post Diameter | 6 mm |
| Max. String Gauge | 1.8 mm |
| String Thru Hole Center Height | 27.9 mm |
| Bushing Type | Screw-in hex head |
| Bushing Reference | Ø15 mm outer reference, Ø8.2 mm inner reference, Ø6.1 mm section shown in size chart |
| Housing Reference | 26.4 mm width and 22 mm height shown in size chart |
| Button Reference | 18.9 mm width and 14.6 mm height shown in size chart |
| Color Options | Chrome, Black, Gold, Rainbow |
| Package Includes | 6 x guitar machine heads, 6 x threaded bushings, 6 x mounting screws, 6 x ferrules |
Compatibility Notes
Important: This tuner is designed for electric guitars with compatible 10 mm headstock holes. Please verify your guitar’s peg hole size, headstock layout, mounting style, post diameter, bushing dimensions, and screw position before ordering. Select the correct 6R, 6L, 3R+3L, 1R, or 1L option for your headstock. Minor modification may be required depending on the guitar model, production year, or existing hardware.
Package Includes
- Package quantity varies depending on the selected layout option.
- 6R option: 6 x right-side guitar machine heads with matching threaded bushings, mounting screws, and ferrules
- 6L option: 6 x left-side guitar machine heads with matching threaded bushings, mounting screws, and ferrules
- 3R+3L option: 3 x right-side and 3 x left-side guitar machine heads with matching threaded bushings, mounting screws, and ferrules
- 1R option: 1 x right-side guitar machine head with matching threaded bushing, mounting screw, and ferrule
- 1L option: 1 x left-side guitar machine head with matching threaded bushing, mounting screw, and ferrule
Installation Note
Before installation: Do not force the tuner posts or bushings into incompatible headstock holes. Align the tuner body and screw holes carefully before tightening the mounting screws.
Video Show
Size Reference
Important: Please refer to the size chart below and compare all dimensions with your original part 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-501D6SP Locking Tuning Pegs for Electric Guitar 1:18 Ratio
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