Preston Offbox 36 Groundbait Bowl And Hoop, A rigid plastic groundbait bowl and angled fixing hoop for attaching directly to seatbox or platform legs. Groundbait can be mixed in the bowl prior to fishing and then attached to your seatbox leg for use. SnapLok for ease of transport and assembly. Inserts supplied: 30mm Round, 25mm Round, 23mm OnBox.