Miche primato 11 speed cassette shimanothe miche primato 11 speed shimano cassette is designed to work flawlessly with all 11 speed shimano groupsets the sprockets are made from chrome plated steel for incredible durability and excellent shifting features material chrome plated steel lock ring al 7075 t6 lock ring compatibility shimano 11 speed weight 255g 11 21tbuymiche componentsfrom chain reaction cycles the worlds largest online bike store