Where appearance is of prime importance, bead size is normally the key consideration. Velocity, nozzle angle and other factors should be adjusted to give maximum finishing speed and to minimize consumption. As a general rule, large bead at high intensities provide a deep matte; at low intensities, large beads give a smooth, bright surface: small beads at high intensities give a dull, matte and at low intensities a bright satin. Various seive sizes on hand ,50 pound bags ,additional shipping may apply.