The pegs are 5.8cm long and the grade 201 stainless steel wire that they are made of is 1.75mm in diameter. These 36 pegs come with a nice double drawstring hemp bag. They don't break or fall apart, because the whole peg is made up out of just one single piece of wire. Be assured that they will still be there when all the wooden and plastic ones are gone.
The grade201 ss pegs are for normal conditions only. If you want the luxury to leave them outside on the clothes line all the time and you live for example close to the ocean, you should rather go for the better grades stainless steel wire, like 304 or 316 (marine grade).