K1 Hard Järn | 2025 Joseph Anderson Tour Series
The Kastaplast K1 Jarn is an overstable mid range driver & approach disc. It is the first overstable approach disc by Kastaplast. This flat top disc golf disc has predictable fade and is great in headwinds. Players of all skill levels need the Jarn in their bag!
The disc’s flight pattern makes it just as competent for touchy flex shots as for flat-out hyzers. Its low profile makes it easy to grip and easy to release.
Jarn is Swedish for Iron.
Side Profile
Flight Numbers
Speed 4.5 | Glide 3 | Turn 0 | Fade 3
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Similar Discs
We find that these discs offer a similar flight to the K1 Hard Järn | 2025 Joseph Anderson Tour Series

Try the K1 Hard Järn | 2025 Joseph Anderson Tour Series Risk Free!
Every new disc purchased in the USA is covered for 30 days by Foundation Care meaning you can use it however much you want and exchange it if it doesn't work out!

Kastaplast
Kastaplast is a Swedish disc golf company known for its high-quality, durable discs, and commitment to innovation. Their discs are renowned for their unique plastic blends, which offer a perfect balance of grip, stability, and longevity. Many throwers claim Kastaplast to have the best plastic on the market.
Plastic Details
K1 Line
K1 Line
K1 line is Kastaplast’s super durable material with a nice combination of firmness and gumminess. Discs in K1 Line will appear in both solid and translucent colors.
It is also available in a soft variety which is similar to K1, but flexier and grippier.
K3 Line
K3 Line
K3 Line is our base plastic – grippy in all conditions. With this plastic you will get that nice worked in feel quickly. K3 is also available in hard and soft varieties to make sure there is a type for each player!

