The SRAM PG 1070 cassette is available in a wide selection of ratios. It works with any Shimano 8, 9 or 10 speed compatible hub and is compatible with any 10-speed chain. PowerGlideT technology allows for smooth gear transition either up or down shifting. The PG-1070 cassette features a semi-spidered design that is light, strong, and efficient. It only weighs 220 grams, but is made with heat-treated steel for a long service life.