Abstract: A device for removably attaching an accessory to first and second spaced-apart elements affixed to a bicycle and defining an opening that has a minor dimension and a major dimension comprises a support member and a cleat member, which are essentially permanently attached to each other and each of which has a medial portion adapted to span the minor dimension of the opening and a leg portion extending out from each of the opposite ends of the medial portion for engagement with opposite sides of a respective one of said elements. The overall dimension between the outer ends of the leg portions of the cleat member is less than the major dimension of the opening so that the clear member can be inserted in the opening by aligning it with the major dimension of the opening and then repositioned to align it with the minor dimension and engage the leg portions with the bicycle elements.