Replacement poles. They aren't cheap because they aren't cheap. Heavy duty, made to last, and built to fit our tents, tarp, and Lean-to. 3/4" outside diameter on the inside pole, 7/8" outside diameter on the outside part of the pole. Short pole is solid, long pole is two piece, ridgepole is three piece. Maximum length of Ridgepole is 7' 6". Secures with button-locks.