6 inch replacement rubber hatch cover for assorted kayak brands. Made of soft black rubber. Fits a raised lip 6 7/16 inches outside diameter, like a Tupperware lid. Has internal tie-off for a leash. Cover is 6 5/8 inches outside diameter, 6 1/16 inches inside diameter. Standard glove box hatch cover for all Tiderace & Rockpool boats, as well as others. Note, you may also order the rim if you're looking for the full hatch/rim set.