Kastaplast K3 Jarn Midrange (Stock Stamp) [Back Stock Inventory - Disc and Stamp Color WILL VARY]See All: K3 Jarns with Stock stamp. Mold: The Kastaplast Jarn Midrange Speed: 4. 5 Glide: 3 Turn: 0 Fade: 3 See all Jarns The Jarn is an overstable mid range driver & approach disc. It is the first overstable approach disc by Kastaplast. This flat top disc has predictable fade and is great in headwinds. Players of all skill levels need the Jarn in their bag! Jarn is Swedish for Iron. PDGA Approved Date: Dec 13, 2021 > Specifications Max Weight: 176.