Available in 3UG4 and 5. 'FX Plus' feature which I suspect is the updated 'Vibration Filter Cap' feature of the NS7700 which is shown here for visual comparison with the NS6600. The orange shock absorber feature at the cone head feels like synthetic plastic rubber. Feel as stated is light and swings quick but not as quick as the NS9900 and also less stiff. On the whole, I find the colour scheme pleasant and appealing.