I be a professional finish carpenter and have have eight of these bag for the past eight year or so . I use they to sort in size order all the nail and screw that I commonly use . they be great for tote around job site , sit stably wherever they be set , and be durable . they have be a great organizational aid for my work and have eliminate the need for carry box , can or jar . I highly recommend they to anyone who have a similar line of work .