
21-K401N Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $12.99 | Condition is New, Jupiter Trombone water key replacement screw. Specifically, for JSL-232, JSL-438, FREE SHIPPING | ![]() |
![]() | $19.95 | Condition is New, Jupiter Genuine Trombone Water Key WaterKey Spit Valve Screw Rod, FREE SHIPPING | 100.0% |
![]() | $24.99 | Top Pick! Condition is New, Jupiter Trombone, JSL-232, JSL-438, CEB-630, CTB-40-1, Water Key Replacement Kit, FREE SHIPPING | ![]() |

Introducing the Jupiter 21-K401N Trombone Water Key Screw, an essential accessory designed specifically for Jupiter JSL-232 and JSL-438 trombones. This high-quality part is meticulously engineered to ensure a perfect fit and optimal performance for your musical instrument.
The Jupiter 21-K401N Water Key Screw is a crucial component of your trombone's water key system. Its primary function is to securely attach the water key to the instrument, allowing you to add or remove water as needed to maintain a consistent pitch and prevent sticking.
Manufactured using top-grade materials, this water key screw is built to last. It boasts a sleek, polished finish that not only looks great but also contributes to the overall aesthetic appeal of your trombone. The screw is also designed with a precise threading that guarantees a snug fit, ensuring the water key remains securely in place during even the most vigorous performances.
Replacing a worn-out or damaged water key screw can significantly improve your trombone's playability. With the Jupiter 21-K401N, you can enjoy the peace of mind that comes with knowing you have a reliable and functional water key system.
In summary, the Jupiter 21-K401N Trombone Water Key Screw is an indispensable accessory for JSL-232 and JSL-438 trombone owners. It is meticulously crafted from high-quality materials, ensures a perfect fit, and contributes to the overall performance and appearance of your instrument.
Pros and Cons of Buying a Jupiter 21-K401N Trombone Water Key Screw for JSL-232 and JSL-438 Models
The Jupiter 21-K401N trombone water key screw is a replacement part designed for various Jupiter trombone models, including the JSL-232 and JSL-438. In this discussion, we will weigh the advantages and disadvantages of purchasing this specific water key screw model to help you make an informed decision.
Pros:1. Enhanced durability: The Jupiter 21-K401N water key screw is made from high-quality materials, ensuring long-lasting performance and reducing the need for frequent replacements.
2. Improved sealing: This water key screw provides a better seal, preventing water from entering the instrument and causing potential damage to the valves and slides.
3. Easy installation: The screw is designed to be a straightforward replacement for the existing water key screw on your JSL-232 or JSL-438 trombone.
4. Cost-effective: Replacing a worn-out water key screw with a new one can save you money in the long run, as opposed to purchasing an entirely new trombone.
Cons:1. Potential fitment issues: While the Jupiter 21-K401N water key screw is generally compatible with various Jupiter trombone models, there is a possibility that it may not fit perfectly on your specific JSL-232 or JSL-438 instrument. In such cases, you may need to seek additional assistance from a professional repair technician or contact Jupiter's customer support for clarification.
2. Additional cost: Although the Jupiter 21-K401N water key screw is a cost-effective solution compared to purchasing a new trombone, it still requires an additional investment for those who may not have a spare one on hand.
3. Slightly longer replacement time: Though the installation process is generally straightforward, it may take a bit more time to remove the old water key screw and install the new one, especially for those without prior experience.
Conclusion:The Jupiter 21-K401N trombone water key screw offers numerous benefits, such as enhanced durability, improved sealing, and easy installation, making it a worthwhile investment for trombone players. However, potential fitment issues and additional costs are factors to consider before making a purchase. If you encounter any concerns regarding compatibility or installation, it's recommended to consult a professional repair technician or contact Jupiter's customer support for guidance. Ultimately, the decision to purchase this water key screw depends on your personal needs, budget, and the condition of your current water key screw on your JSL-232 or JSL-438 trombone.
Details:
Specifically, for JSL-232, JSL-438, Cebu-630, ctn-40-1 trombones. Jupiter trombone water key replacement screw.
specifications brassinstrum:
- brand: Jupiter
- mpn: 21-k401n
- type: Waterkey
- instrument: Trombone
- features: Water Key
- country of origin: United States
shipping brassinstrum:
- carrier: usps
- class: standard, expedited
- type: fixed
- transit: 4-8 days
- service: usps ground advantage, usps priority mail, usps priority mail express flat rate envelope
returns brassinstrum:
- paid by: seller
- time: 30 days
- policy: returns accepted
- method: money back
general brassinstrum:
- category: Musical Instruments > Brass > Trombones
seller brassinstrum:
- # reviews: 7949
- rating: 99.9%
- city: newnan, georgia
offer brassinstrum:
- started: april 3, 2026
- availability: in stock
- prices: $12.99–$24.99
- item condition: New
- options: ship-to-home
- sold #: 9
payments brassinstrum:
- wallet: google-pay
- credit card: mastercard
- other
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