Bond professional gold filler is adhesion promoted for double coated galvanized steel used on newer vehicles, plus aluminum, fiberglass, SMC and more. advanced 3M resin technology makes it extremely easy to mix with the included hardener and it applies smoothly and is easily sandable in minutes. the result simpler professional grade auto body repairs in garages of any size. featuring advanced 3M resin technology, Bond professional gold filler is the ideal material for quickly and easily filling low spots, dents and scratches in auto body surfaces before priming and painting. Bond professional gold filler is formulated for a variety of surfaces including aluminum, fiberglass, SMC and epoxy primers. it includes an adhesion promoter which is excellent for the double coated galvanized steel common on newer vehicles made since 1998. with the included red cream hardener, the filler is very easy to mix and applies smoothly across a range of vehicle surface imperfections. it provides a working time of just 5 min and the fast drying formula provides a 20 min curing time for a perfect balance enough time to complete the work, yet keep the auto body repair project moving along. excellent sanding properties make it simple to beautifully match the cured filler with the surrounding surface. this filler is non shrinking, virtually eliminating the possibility of rework due to changes in the filler after curing. even a small repair can seem complex at first. so 3M body repair system simplifies the entire automotive body repair process by dividing it into four stages - stage 1 - Prepare. this stage includes pulling dents, removal of paint and rust and efficient, effective masking of the area. stage 2 - Fill. this stage involves patching holes with reinforced filler and smoothing and shaping filler before painting. stage 3 - Paint. this stage includes painting the area and blending and smoothing primer and paint. stage 4 - Finish. the final stage for showroom grade results - removing small defects, sealing and polishing clear coats and other painted surfaces. 3M supplies premium products such as abrasives, tapes, body fillers and tools for every stage. this system helps you work easily, efficiently and successfully across the entire body repair process. as a brand of 3M, Bond is well known among collision repair professionals and others who are committed to helping restore the beauty and value to your automobiles. this auto body filler is another way that 3M applies science to life - and helps you rediscover the excitement of owning and operating like new vehicles.