Concrete Skate Ledge

Cast-concrete street ledge edged in steel angle, the waxed block every skater grinds: piece knob (straight 2m, straight 4m, L-corner, curved quarter-circle, hubba sloping down beside the 0.6m stair set, wide 2x2m manual pad); height knob (0.3, 0.45, 0.6m).

风格：low-poly, flat-shaded vertex colors, no textures, single shared material, so any set of these merges to one draw call; shares palette and scale with its kit