new blade with Sweet Spot Transformer! Suitable for all-round players who
exploit every variation of speed and spin! The Sweet Spot Transformer lets you
adjust the weight inside the handle up or down! If adjustment is made to the top
you increase the power. Set the weight to the lowest point, increases control
with less speed! Each blade comes with an adjustment key! “
With the new SST-system you can adjust the balance
of the blade by yourself. Only turn the adjustable knob on the grip and the
balance changes gradually. 7-ply all-round+ blade with hollow, flared grip.
Reviews (from internet/newsgroups):
The whirlwind has been revamped as of about 6mo ago. It's at the upper range of all+ now. Plenty of power for attacking. Simply a better blade than the red one.
I recommend the 729 9030 SST or 729 Blackwhirlwind. Good quality and light blades for very good price
I finally decided to buy a:
Friendship LiKuang Black Whirlwind Transformer blade.
You can set the blade from DEF+ to ALL+!!
How good is that?!