3M Reinforced Filler for DMS is a two-component, resin-rich filler that offers easier mixing and dispensing through the 3M Dynamic Mixing System. The system efficiently mixes the filler and hardener so that it is ready to use immediately upon being dispensed, saving automotive technicians time and effort by eliminating hand mixing.Excellent Adhesion on Most Automotive Substrates Our 3M Reinforced Filler for DMS contains milled fiberglass and is packaged in a dual cartridge system. Our reinforced filler offers excellent adhesion to steel, galvanized steel, aluminum, E coat, SMC and FRP. It provides additional strength when deeper fill and gap spanning capability are needed. This filler is ideal for weld seams, SMC, and FRP. A Convenient Way to Mix Hardener and Filler 3M Reinforced Filler for DMS streamlines the process of mixing filler and hardener. Instead of manually mixing filler and hardener on a board with a spreader, the 3M Dynamic Mixing System delivers a perfect ratio of hardener and filler. The filler may be applied to the vehicle straight from the dispenser with the simple touch of a trigger on the 3M Dynamic Mixing System applicator. For the typical auto body shop, this system maximizes productivity and efficiency.