A fastener for detachably securing a first item to a second item comprises a connector comprising a U-shaped rod having a central portion between two legs and a main body configured to be attached to the second item. The main body comprises a housing having a slot configured to allow passage of a central portion therethrough into the housing, and a downwardly biased securing pin provided within the housing. The slot has an upstanding lip provided at a lower edge of the slot that defines two downwardly extending openings. Each of the openings are configured to allow the two legs to extend out of the housing when the central portion is in a secured position where the central portion is lowered in the housing relative to the slot. The securing pin is configured to exert a downward bias against the central portion in the secured position.