Wilson K Factor Surge tennis racket in a midplus 100 square inch head and 4 3/8 grip. The K Surge 100 weighs 9.9 ounces unstrung and is 27 inches long.  It is balanced at 33 cm for a 4 pt head light rating. The K Surge features Karophite technology which utilizes carbon black nano fiber for better control and feel.  The Kompact center with a longer base provides more control and new frame design Konstruction provides more stability.  4 Kubed equals 64% more Kontrol. Recommended string tension is 53 to 63 lbs in this 16X19 string pattern where I recommend going down 2 lbs in the cross strings to equalize string pressure throughout the frame.   With a stiffness of 68 and a dual taper beam width of 23/25/22mm, I would recommend this racket for players with medium+ swings who want to whip powerful topspin strokes.  The more open string pattern, dual taper beam, and 100 head size combined with a 68 stiffness allows a player to hit a heavy ball and great angles on topspin passing shots while the narrow throat bridge provides exceptional feel. No cover available.