Crankset Road 170mm 172.5mm 175mm Bike Crank Arm Double Speed 50-34T 52-36T 53-39T Chainring Bike Crankset for Sram. Brand: BUCKLOS Type: DUB Road/Gravel Chainring Material: Aluminum alloy Teeth: 53-39T, 52-36T, 50-34T Color: Black Shape: Round Weight: 214.6g(53-39T)(Different Size Different Weight) Compatible with: 8/9/10/11 Speed Compatibility: SRAM GXP Crankset System. Brand: BUCKLOS Material:Aluminum Alloy Length:170mm/172.5mm WeightCA. :560.2g Model:DUB Crank. BUCKLOS DUB Crankset Road 170mm 172.5mm 175mm Bike Crank Arm Double Speed 50-34T 52-36T 53-39T Chainring Bike Crankset for Sram.