Kastaplast K1 Stal Weight:173-174 and a black solid outer

and a black solid outer rim

Tame your mid-range shots

Safety Green: Compliant with ANSI / ISEA 107

The Koling Thunderbird is just stiff enough for all the flicks while being soft enough to give you all the feel in the flight plate one would need to smash a backhand

Kastaplast K1 Stal Weight:173-174 and a black solid outerThe Kastaplast Stal is an overstable fairway driver and is named for its toughness. Stal, the Swedish name for steel, was once a common soldier's name. 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. K1 Soft is similar to K1, but flexier and grippier. Just as with K1, this plastic comes in both translucent and solid colors. Stal Flight