Altus 28x38x48t 7/8spd 170mm Square w/ Guard Go to amazon.com Related posts The 11 best cranksets shimano for 2022 Feature8 speed compatibleChainguard integrated designChaincase compatibleRequires a 123mm bottom bracketBottom bracket not included 929 grams DescriptionALTUS M311 28/38/48 170MM BLK 7/8 SPEED