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First Run K4 Sten
Stable Catch & Approach Disc
1 | 3 | 0 | 1
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▌ Discs ship inside collector bags in a box
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The Sten
The Kastaplast Sten (Swedish for "stone") is a unique and incredibly fun disc, designed as Kastaplast's first dedicated catch-and-throw disc, but is also equally adept as a versatile approach disc. Made in Kastaplast's new K4 plastic, the Sten is surprisingly soft, super grippy, and lightweight, making it perfect for warming up, casual games at the park or beach, or introducing new players to disc golf. Despite its name, this floater offers a lot of glide and enough stability for a slight, dependable fade at the end of its flight, providing a surprisingly useful addition for controlled approaches on the course.
Note: The listed flight numbers are not official.
K4 Line Plastic
Kastaplast's K4 plastic blend is their newest innovation, a soft hybrid material that strikes a unique balance between base and premium lines. Designed to offer an exceptionally grippy and gummy feel, K4 provides an incredibly confident hold in the hand, perfect for a wide range of shots. While it will show wear and tear over time, consistent with a softer blend, the flight characteristics of your disc are designed to remain remarkably true, offering predictable performance round after round. K4 also boasts the added bonus of floating in water, making it a fantastic choice for those tricky shots near water hazards.

Kastaplast Sten
Tech Specs
- Diameter: 21.1 cm
- Height: 1.8 cm
- Rim Width: 0.9 cm
- Rim Depth: 1.3 cm
- Bead: None
PDGA Approved: Jun 23, 2025