Alumfast aluminum reinforced epoxy putty. Stick has infinite uses filling gaps and holes on plumbing, electrical, auto, HVAC and industrial applications where a non-magnetic aluminum finish is desired. It is an epoxy-based product that is extruded in a cylindrical form to include the hardener and resin for easy and assured no waste mixing. Alumfast Stick adheres to most surfaces and can be machined and used under water as well. Molds like clay and universally used for repairing aluminum tanks, aluminum boats, castings, etc. A permanent, non shrinking metallic filler for blow holes in castings. Widely used for fast, inexpensive, but accurate drill jigs and placement fixtures.