2. Can  stackable packed

  3.Ergonomic handels no sharp edges

  4. can full fill with concrete before shipment. or Can water or sand it by yourself

  5. vertical holes or horizontal hole both avaliable

  6. Can be in all safety colours

  7. current hole size and hole distance :   32-100/ 32-90 / 32-75 /42-100 /48-100 /60-90