|The NITTAKU Fastarc S-1 rubber is "Fast" with an "Arc"! NITTAKU Fastarc S-1 is the speed-oriented version of Nittaku's newest rubber. Utilizing a power topsheet and tension power sponge, this rubber generates explosive power along with great spin.
G-1 means "Grip First" and S-1 means "Speed First"
Choose Fastarc G-1 for more spin with great power, and choose Fastarc S-1 for more speed with great spin.