The new Power Glide 1050 cassette offers an innovative approach to 10-Speed cassette design. Our cassette performance is optimized by material choice, tooth profile & shift ramp design for quick & positive index shifting. The cassette shifts efficiently & positively in all high performance situations. The cassette features a semi-spidered construction for a maximum stiffness to weight ratio & is available in many optimized configurations to best match a wide variety of uses.