A quick-release device includes a tubular structure and a flange radially extends from a second end of the tubular structure. A ring is sleeved on the tubular structure and selectively engaged to the flange and a sleeve is co-axially and securely connected to the ring. A shaft is co-axially connected to the tubular structure. A washer is received in the sleeve and abutting the flange of the sleeve, wherein the shaft extends through the washer. A pivot is mounted to a distal end of the second portion of the shaft. A lever is pivotally mounted onto the pivot. The lever includes a handle having a pair of ears formed on one end of the handle, wherein each ear has a pivot hole defined therein for rotatably receiving two opposite ends of the pivot and a raised portion formed thereon for selectively inwardly forcedly push the washer when fastening the quick-release.