How many kinds of materials can be used as tennis rackets counterweights?

Currently, the method for adding counterweights to tennis rackets, which is simple and convenient and has been widely used is to paste the lead foil stickers in the tennis rackets. In the early period, lead as the raw materials of counterweights also once been widely appreciated and used, but with the worsening environmental problems and people's environmental consciousness, the use of lead has been less and less.

 

Initially the effect of tennis racket head stickers are used to protect the outside of the racquet line pipe, to avoid the fracture leading by scratching with the ground, and it doesn’t have the function of counterweights. When people realized that increasing the counterweights to the tennis rackets can control the racket hitting strength and balance, then the lead foil stickers came into being. The users just need to simply paste the lead foil on the inside of the tennis rackets, then it can achieve the purpose of increasing the stability and has little effects to the ball hitting speed. Although pasting the lead foil stickers to the tennis rackets head can increase the stability, but it will limit the hitting speed, and have no ability to hit the strong rotation and intensive back balls.

Although it can be very fast and convenient to achieve the purpose of adding counterweights to tennis rackets by using lead foil stickers, but its toxic property will inevitably cause some harms to the users, in particular for the professional tennis players who need to contact with the tennis rackets and practice every day. Tungsten alloy has a series of excellent properties of non-toxic, high density and good corrosion resistance, which can make it to be widely used as the counterweights. The feature of high density means that it only needs a small volume but can have the desired weight, so as to achieve the purpose of keeping the tennis rackets balancing. For the tennis rackets,which can only use the special counterweights with good workability, tungsten alloy is the most appropriate material. Its non-toxic property can reduce the harm of the environment and the human bodies, good corrosion resistance can be a good solution to the erosion problem caused by perspiration. Thus, it’s more appreciate and environmental protection that using the tungsten alloy counterweights to counterpoise the tennis rackets.