NEW Preston Innovations Fishing Groundbait SMALL Bowl & Hoop - OFFBOX/93 Rounded plastic bowls Metal rigid hoop Off Box Knuckle Can be swivelled around Attaches to seatbox or legs Preston Groundbait Bowl & Hoop, The Preston groundbait bowl & hoop consists of one large or small groundbait bowl with a rigid hoop with an Off Box knuckle for attaching the bowl to a seatbox or platform legs. Once mounted, the groundbait bowl can be swivelled around to the correct position to suit your angling needs.