GUYKER GK-D-405SP 6R In-line Dopamine Color Locking Tuning Machines No Screws
GUYKER GK-D-405SP 6R In-line Dopamine Color Locking Tuning Machines No Screws
GUYKER GK-D-405SP 6R In-line Dopamine Color Locking Tuning Machines No Screws
GUYKER GK-D-405SP 6R In-line Dopamine Color Locking Tuning Machines No Screws

Guyker Music

GUYKER GK-D-405SP 6R In-line Dopamine Color Locking Tuning Machines No Screws

Sale price$69.99
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Color:Red + Gold + Red Button
Packaging:6R (Right Hand)

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Tired of playing a fuzzy pitch? Never play with easily loosened strings again with Guyker's® 6R In-line No Screws Locking Tuning Key Pegs! These tuning keys keep your guitar in check all the time with a stable lock-in mechanism, making your adjustments smooth and on-point.  


Guyker® continues to work hard in producing highly durable and user-focused guitar components that empower musicians to bring out the best of themselves. For the 1:21 6R in-line Electric Guitar Tuning Keys, here’s what to expect: 

1:21 Gear Ratio

Arrive at your desired pitch in no time with a 1:21 gear ratio. Useful for songs with a fast tempo and a wide scale range, these machine heads can help you stay on pace. 

Wide Compatibility

Be secured with your order as these tuning keys are made to fit a diverse range of acoustic and classic guitars.

Sealed, Oval-Style Handle in Pearl

Turn your keys and perform with charm using these classic pearl-built keys. Smooth and shiny, wear-resistant, anti-corrosion, and dust-proof, the 1:21 6R-in-line Electric Guitar Locking Tuning Keys ensure quick and accurate tuning regardless of the environment. 

Easy Installation

Need to suddenly replace your keys for the next set? Be at ease with these machine heads, designed for easy installation. You can attach/remove them yourself without the help of a professional guitar technician. 

Constructed from Solid Materials

Get long-lasting support and play for long periods of time as these guitar locking tuning keys are made from premium-grade materials ready to withstand hundreds of continuous adjustments. 

Heavy-Duty Internal Gears

Master the most strenuous guitar arrangements and up your skills with these tuners designed with highly durable internal gears that are able to endure heightened string tensions. 



  • 6 x Guitar machine heads 
  • 6 x Threaded Bushings
  • 6 x Mounting Screws
  • 6 x Ferrules



Designed to fit modern 10mm headstock holes, the Guyker 3R3L Classical 1:21 Locking Tuning Keys are compatible with a wide range of electric guitars



  1. Delayed Orders: Should your order not arrive within 7 days after shipping, we kindly request that you provide product pictures of your order and ensure that the shipping address is accurate. Rest assured that our new products undergo thorough inspection by our quality control team before being shipped.
  1. Shipping Times: We offer two delivery options: regular and fast delivery. Regular deliveries take 7-15 working days, while fast deliveries take 7 working days. 
  1. Secure Packaging: Our company takes utmost care in packaging your order with standardized packing methods. This ensures that the package remains strong and secure during transportation.
  1. Customer Feedback: We highly value your feedback. Please take a moment to leave us a review once you receive our 6R-in-line Electric Guitar 1:21 Tuning Keys.  For concerns and questions, we kindly request customers to communicate with us directly. 
  1. Import Duties and Taxes: All products are free of additional tariffs. 

Thank you for your attention to these important details. We value your satisfaction and are committed to providing you with a positive customer experience.

Guyker®. Empowering Your Music with Premium-Quality Guitar Parts

Upgrade your guitar with Guyker®’s  6R In-line No Screws Locking Tuning Key Pegs and unlock a new level of musical precision and performance!

Did not find what you’re looking for?

Don’t hesitate to get in touch with our team!

Yes. A standard right hand guitar generally has its tuning machines on the left side (would need 6R Right Hand tuners), while the reverse headstock of a standard guitar would have a headstock that usually seen on a left hand guitar (tuners on the right side), so you should choose 6L Left Hand tuners.

To determine the right size or fit for a specific accessory, we recommend referring to the product descriptions or specifications, as they often include information about compatible instruments and sizing details. Additionally, you can reach out to our customer support team at [] for assistance. We can provide guidance and help you find the appropriate accessory for your guitar or bass.

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 [] for further clarification.

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.

To initiate a return or exchange, please follow these steps:
■ Contact our customer support team at [] 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.

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 [] to determine the eligibility of your particular product.

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 [] for specific details regarding return shipping costs.

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