Fit on many Mountain road bicycle. Can be used to carry packs and carry items, carries up to 165 lbs/75kg. Quick release mount at seats post, and screw fix to frame positioning. 55cm x 21cm/21.65inch x 8.27inch. Please allow slightly errors due to manual measurement and different monitors.Please verify your address during checkout. We are not responsible for any wrong or undeliverable addresses. People always bought together with.