Pre-Made Tsuka KA1 (0.4mm x 3 + (0.1mm x 0.5mm)) 0.25 Ω – 10 Pack


The Pre-Made Tsuka KA1 coils are precision-crafted using durable KA1 wire, offering a reliable 0.25Ω resistance. Sold in a pack of 10, these coils ensure even heat distribution and are ideal for sub-ohm applications. Designed for ease of use, they provide a consistent and time-saving alternative to manual coil building.

✔ Huge Range Available

✔ Produced In Warrington, UK

✔ Shipped Within 24 Hours

✔ 30 Day Returns Accepted

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Pre-Made Tsuka KA1

The Pre-Made Tsuka KA1 coils, sold in packs of 10, are precision-engineered using high-quality KA1 wire. Each coil is made up of three 0.4mm core wires twisted together and wrapped helically with a flattened 0.1mm x 0.5mm wire, resulting in an even heat distribution and optimal performance. The coils have a resistance of 0.25 ohms, making them suitable for sub-ohm applications and compatible with devices that support this resistance.

As a time-saving and cost-effective alternative to manual coil building, these coils ensure consistent quality and performance. As a result of the KA1, the coils are extremely durable and long-lasting. With simplicity and efficiency in mind, the Pre-Made Tsuka KA1 coils are a practical, precise, and reliable choice for both seasoned users and beginners alike.

About The Product

The details of this product are as follows:

  • Metal – FeCrAl A1 ( KA1)
  • Pack Size – 10 Coils
  • Resistance – 0.25 Ω
  • Coil Build – 0.4mm x 3 + (0.1mm x 0.5mm)

Why Use The Crazy Wire Company

  1. Quality of products: The Crazy Wire Company always  offer high-quality products that meet industry standards and customer expectations.
  2. Selection: We offer a wide variety of wire products and sizes to meet the diverse needs of our customers. We have more than 600 products available through our site and counting. 
  3. Price: We always offer the best value possible. Our wires are available as part of our major weaving processes, so it is bought at the best possible rate. 
  4. Availability: Our products are kept in house and are ready to ship immediately. 
  5. Customer service: Our experienced staff help our customers feel confident in their purchases and provide assistance when required. 

What Else Is Available?

Not only do we offer KA1 round wire. We also have a huge range of Nichrome and stainless steel round wire in immediate stock too.

We stock Ribbon wire and flat wire are for immediate dispatch too.


FAQs About This Wire

How Do Pre-Made Tsuka KA1 Coils Ensure Consistent Performance?

Through meticulous design and precision engineering, Pre-Made Tsuka KA1 coils guarantee consistent performance. KA1 wire, known for its durability and reliable resistance properties, is great for using to construct the coils. The coils are constructed by twisting three 0.4mm core wires together and wrapping them helically with 0.1mm x 0.5mm flat wires. By using this specific configuration, the coil receives an even and uniform heat distribution, which results in a stable and consistent output. Likewise, the manufacturing process adheres to strict quality control measures, ensuring that each coil of the 10-pack is of the specified 0.25Ω resistance and performs optimally.

How Do I Properly Install Pre-Made Tsuka KA1 Coils?

  1. Power Off Device: Ensure that you turn off your device before starting the installation.
  2. Remove Old Coil: If you’re replacing a coil, remove the old one from your device by unscrewing or unclipping it from the build deck or coil holder.
  3. Inspect the Pre-Made Tsuka KA1 Coil: Before installation, check the coil for any visible defects or irregularities.
  4. Place the Coil: Position the Pre-Made Tsuka KA1 coil in the designated area on your device’s build deck. Ensure the coil legs align with the terminal slots or posts.
  5. Secure the Coil: Once positioned correctly, tighten the screws or clamps to secure the coil in place. Ensure the connection is firm but be careful not to overtighten as this could damage the coil.
  6. Trim Excess Leads: Using a pair of wire cutters, trim any excess wire leads protruding from the posts as close to the post as possible to prevent shorts.
  7. Check Resistance: If your device has a resistance reader, check that the resistance is close to the expected 0.25Ω to ensure there are no shorts or issues with the coil.
  8. Test Fire: Briefly pulse fire the coil at a low wattage to ensure it is heating evenly from the center outwards. Make any necessary adjustments if you observe hot spots or uneven heating.
  9. Cool Down: Allow the coil to cool down after test firing before proceeding further.
  10. Wicking: Insert an appropriate wicking material (like cotton) through the coil, ensuring it is snug but not too tight. Trim and tuck the ends of the wick as per your device’s design.
  11. Prime: Apply a few drops of e-liquid (if applicable) to the wick to prime it.
  12. Reassemble and Check: Reassemble your device and check for proper functioning.


Check out our blog expanding on the difference between Clapton and Flapton coil wires. This is an extremely detailed article, which we hope will provide much insight into the subject. 

We also offer similar products through our highly popular eBay store, check us out there too.

Contact our team today if you have any questions at all. We are always really keen to help in any way that we can.


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