Sharpe Dry-aire Desiccant System for Auto bodywork & Painters 3/4 pipe connections The Sharpe System removes dirt, water, oil and uncondensed moisture from compressed air lines and is ideal for painting applications, new filter in stage 1 and 2 stage 3 needs (Desiccant or Silica Gel when it's installed - not provided) desiccant sell for about 30 cents a pound 3 pounds required, 3 Lbs of Silica Gel sells for about $130 either will work well. Not recommended for breathing applications. These units cost $695 new this one is in VG clean inside and outside ready for use.