These pegs don't break or fall apart because the whole peg is made from just one single piece of wire. The stronger 2 mm diameter peg is ideal for high wind environments.
The Grade 201 stainless steel pegs are for normal conditions only. If you leave your pegs out at night or live by the ocean you should select the 304 or 316 marine grade stainless steel wire peg. Be assured that these pegs will still be there when all the wooden and plastic ones are gone.
Make a better choice of stainless steel pegs over plastic pegs!