cassette 8 speed back

gear 3 1 8 isolated bicycle bike cassette metal cycle transport part technology equipment steel cog tooth ring white circle sprocket 3d rendering rear sport chain cycling wheel gearwheel background closeup mountain illustration machine render three-dimensional transportation vehicle alloy chrome cogwheel gearing circular component set design gearshift icon iron nobody object drive music race silver sound speed transmission cyborg frame head mechanism ride robot shift wire cable black earphones macro cogset derailleur freewheel gearlever back view hole color t layer layers isolate isolation