Long Compost Crank® compost aeratorDescription Everything else about this tool is the same as the original Compost Crank, with an extra 7 inches of working length. So for those of you looking for a longer tool for your taller compost bin, here it is! This longer tool originally came about because people were asking for a longer version for composting toilets, so we worked with David Omick (see quote below) to figure out the best size. With his expertise and advice, we are making