Worry-Free Purchase


Worry-Free Purchase

Sale price$0.98
Option:Get a full refund if your order doesn’t arrive as described, including loss or damage in transit.

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Get a full refund if your order doesn’t arrive as described, including loss or damage in transit.
  • Arrival delay: Claim for $5 if your domestic package is not delivered within 10 days since fulfillment (30 days for international package).
  • Damage: Claim for up to the full value of your purchase if your items are damaged in transit.
  • Loss: Claim for the full value of your purchase if your domestic package is not delivered before the 30th day since fulfillment (60th day for international package).
  • Worry-Free Purchase also includes carbon offsets for carbon emissions produced within the recipient’s destination country .
Visit Seel Resolution Center to easily resolve your package issues if any of the above happens.
Please note: Worry-Free Purchase is a value-added service offered by Seel. Please don't purchase it as a stand-alone item.

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 [support@guyker.com] 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 [support@guyker.com] 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 [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.

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.

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.

Customer Reviews

Based on 3 reviews
Rob Curcio
awesome product

Great product, fast service and shipping.

Rickie Rainwater
Nice tuners

I believe these are fine tuners and are great for color accenting an instrument. The 10mm is similar to quality GOTOHs.

Jeff Gregory
Do Not Buy

I ordered a set of Dopamine tuners for a Les Paul project. After a 3 week wait to receive the tuners I installed one and the string post was so short that I could not string the guitar.

After much back and forth I was told that there was a manufacturing issue with the batch mine were made from. However, getting a refund has been almost impossible due to their lack of customer service.

I am.very disappointed thus far and will not buy another product from them in the future. And it's a shame because the product that arrived looked spectacular until I tried to actually use them.

Thank you for sharing your feedback regarding the Dopamine tuners you purchased for your Les Paul project. We deeply regret the inconvenience you experienced with the product and the delay in resolving this issue.

We acknowledge that there was a manufacturing issue with the batch your tuners came from, which resulted in the problem you encountered. We understand how frustrating this must have been, especially after waiting three weeks for the product to arrive.

We have processed a full refund for your purchase to address this matter. You should see the refund reflected in your account shortly. We sincerely apologize for the poor customer service you experienced and for the disappointment this has caused.

Your feedback is valuable to us, and we are taking steps to prevent such issues in the future. We hope you will consider giving us another chance in the future.

Thank you for your understanding and patience.

Best regards,


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