Docooler&reg; 2pcs Kayak Boat Infarctate Scupper Stopper Bungs Drain Holes Plugs Accessories 3.1cm This is a kind of infarctate scupper stopper. Lightweight and portable to carry. High quality material, strong and durable. Easy to install and use. The scupper stoppers can be used to plug the scupper holes tightly in your ocean kayak.