A clamp for securing an item includes a locking rod, first and second clamping members, and a retainer. The locking rod includes an elongated body and a locking member connected to a first end of the elongated body. The locking member is movable between a clamping position and a release position. The first clamping member includes a first opening for receiving a second end of the locking rod body therethrough. The second clamping member is adapted to align with the first clamping member to receive the item therebetween. The retainer is connected to the second clamping member and includes a second opening for receiving the second end of the locking rod body and an interlocking feature for engaging a corresponding interlocking feature on the locking rod body when the locking rod body is in a first rotational position. When the item is positioned between the first and second clamping members and the locking rod is inserted through the first opening and into the second opening and oriented in the first rotational position, moving the locking member from the release position to the clamping position tightens the first and second clamping members into clamping engagement with the item.