The Shimano Deore CS-M771 is an excellent 10-speed cassette for mountain bikes. This cassette is very durable and features Shimano's HyperGlide technology, allowing you to shift quickly and smoothly in all conditions. The cassette consists of 2 spiders made of aluminum, which keeps the weight low. The sprockets are made of high-quality steel, which ensures strength and a long life. The CS-M771 cassette is compatible with the Shimano Dyna-Sys shifting system and has a gear ratio of 11-34. With this cassette you can shift efficiently and enjoy a smooth ride on any terrain. Specifications: - Brand: Shimano - Model: XT - Type: M771 - Bicycle type: Mountain bike - Number of sprockets: 10 - Compatible body: Shimano - Sprocket ratio: 11-34 - Material: Steel - Primary base color: Gray - Gear ratio: 10