Solve the problem of unknown sizes of lost scupper plugs with the Yak Gear Universal Scupper Plug Kit. Scupper plugs act as sealant to the self-bailing scupper holes to keep extra water out of the cockpit of your sit-on-top kayak. These plugs fit any scupper hole with a circumference ranging from ¾ inch to 1-1/2 inch. Orders will be in increments of 4 pieces. Please select the quantity accordingly.