West Marine Epoxy Putty Stick is an easy to use two part putty formulated to make quick repairs; even under water.  The base and hardener are combined in the stick and remain dormant until kneaded by hand to form a thick putty.  Once mixed it tenaciously adheres to fiberglass, wood, metal and plastics.  Slice off the amount you need, mix and apply; 30 minutes later it will have cured to hardness that is sandable and can be drilled and tapped.  Great for use on tanks and outdrives.  Take along this Epoxy Putty Stick and be ready to make emergency repairs.