Solve the problem of unknown sizes of lost scupper plugs with the YakGear 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 3/4 to 1-1/2 in. Orders will be in increments of 4 pieces.