Boat Bungs Cut Off Base Black 30mm x 4 Replacement complete with O ring SealFREE POST AUSTRALIA WIDE! Drain Bungs Cut Off Base Drain Bungs Cut Off Base x 4 Units. Suits Quintrex Tinnies Rubber O ring provides a water tight seal Built in retainer prevents bung loss Plastic Drain Bungs With Cut Off Base To Allow For Mounting As Low As Possible On The Hull. Bungs Come Complete With Rubber O Ring Seal And Coarse Thread Bung. 30mm Diameter Bung And Base Complete x 4 Pieces. 40mm Diameter Cut out. Mount Screws: 4mm r h Base 70mm x