A "vibration dampener that provides a new sensation" with a 17% increase in the hardness of the silicone rubber. The NEW QUAKE brings a "sharp hitting feel with quick ball release" desired by players who primarily use the modern tennis style of "high-speed, low-trajectory shots." ● Product Name: Quake Buster Sol ● Part Number: KVI200 ● Size: 20mm x 20mm x 8mm ● Material: Silicone Rubber ● Color: BK ● 1 piece ⭐Please check the profile section⭐ ⭐Price reduction is not possible⭐ ★You can purchase immediately without comments. Usage...Hard court Type...Racket accessories Details...Vibration dampener