Shimano Compatible Triple Chainwheel Set With Guard 42/34/24 170mm Tapered FitYou are purchasing a steel made tapered fit chain wheel set.Crank arm length: 170mmSteel chainring combination: 42/34/24TSquare tapered fitting ideal for your mountain bike, hybrid bike or road bikeEquipped with ‘SPS SYSTEM’ (Smooth and precise shifting)Outer plastic clear chainguardStandard 9/16″ pedal sizeColour: Matt BlackSteel crank armsWeight: 816g (Approx)Set includes a left hand crank arm