Spacefiller Quality Lubricants were developed to be the first 'true' lubricant for brass instruments. Spacefiller Quality Lubricants are totally non-toxic, containing no petroleum distillates.

The viscosity of Spacefiller Ultimate I (Blue) is suited to the tolerance of machined valves. It is also a 'true' lubricant for hand slides of trombones for those who do not want to use a 'vehicle' for water on their slides.

Several manufacturers of brass instruments want the tolerance of their valves to be as tight as possible. Spacefiller Ultimate II (Red) was developed for 'hand lapped' valves. The viscosity of this product is suited for the tight tolerance of those valves.