... to 50mmDiameter: 2mm ~ 50mm & Custom Dimension: customShape: sheet,plate,round, oval, rectangular, triangular and custom shape, like a square ... and arrows, crossbows, golf shafts, slide guides, boat, kayak2) Tool: umbrella shaft, umbrella rod, curtain rod, fence post, rail, ... planes/helicopters, unmanned aerial vehicles, formula-1 race car4) Vehicle: motor top sticks, u-shaped motor stator wedges, ...