Nittaku Fastarc G-1 – a fun, fast and spin-insensitive rubber for spin-offensive gameplay. Nittaku describes the G-1 as a rubber that secures the highest speed of your strokes, secure arc, and powerful spin. The Tension Spin topsheet provides an excellent grip feeling and strong spin created by unique chemical formula and special pimple design. The strong sponge produces powerful feeling during the stroke. Nittaku recommends the G-1 as a FH rubber with an emphasis on “Spin Drive” performance.