Stiffness: S○○●○○F Balance: HH○●○○○HL Length: 675 mm Weight / Grip Size: 3U / G5, 4 4U / G5 String tension LBS: H ≦ 28 lbs, V ≦ 26 lbs H ≦ 26 lbs, V ≦ 24 lbs Frame Material: Hybrid Composite+Nano Resin Shaft Material: High Modulus Graphite+Nano Resin+7.0 SHAFT
The TK50 is an interesting racket as it has the same specs as the TK8000 but uses the hybrid composite instead of the graphene. Maybe the feel will be different? It could be interesting, especially if it comes with a lower price tag.
looking at the coposits in it - it seems that they are probably using a type of graphite called graphene - super strong super light material, that is 200 times stronger than steel and is starting to be commonly used in every technology - more info about it here: Just an atom thick and 200 times stronger than steel and a near-perfect conductor
The thing about the TK50 is the use of Victor's hybrid composite instead of the graphene. It should give the racket a different feel from the other TK.