10mm CUMARU Deck Wood Plugs are straight sided wood plugs that fit 10mm holes on outdoor furniture, wood decks and other projects. 10mm Cumaru Deck Wood Plugs have flat top, straight sides and slight chamfer on bottom for easy of installation. Side grain (face grain) helps repel water. All deck plugs are 3/8" long. Simply tap in with a rubber mallet or similar tool. No glue is necessary, but for wet environments a waterproof glue like an epoxy or Gorilla glue is recommended to improve seal. 10mm CUMARU Deck Wood Plugs can be sanded, stained and varnished.