Select from these Genuine Apollo needle, nozzle and color-coded air cap options to match your material viscosity, turbine model and specific application needs. Parts may be ordered separately or in sets (see below charts). Includes: nozzles & needles (0.8mm, 1.3mm, 1.5mm, 2.0mm) Air caps (B-HS, C-HS) Size Material Recommendations Needle Part # Nozzle Part # Needle/Nozzle Set Part # Air Caps Air Cap Part # 0.8mm Inks, Dyes, Stains, extremely thin viscosity fluids, Water based finishes A7520-08 A7503-08 A7503-SET-08 A (Green) A7502-08 1.0mm All purpose, thin lacquers, thins enamels, Water based finishes A7520-10 A7503-10 A7503-SET-10 B or B-HS (Gold) A7502-10 or A7502-10-HS 1.3mm Similar to the 1.00mm but slightly higher viscosity A7520-1315 A7503-13 A7503-SET-13 B or B-HS (Gold) A7502-10 or A7502-10-HS 1.5mm Catalyzed lacquers, Conversin Varnish, Primers, Varnish, High Viscosity Industrial Coatings, Urethanes, Enamels A7520-1315 A7503-15 A7503-SET-15 B or B-HS (Gold) A7502-10 or A7502-10-HS 1.8mm Similar to the 1.5mm but slightly higher viscosity A7503-18 A7503-18 A7503-SET-18 C or C-HS (Blue) A7502-18 or A7502-18-HS 2.0mm Thinned Latex paint, Multi-spec, Heavy Primers, Butyrate, nitrate dope, High Viscosity Industrial Coatings A7503-20 A7503-20 A7503-SET-20 C or C-HS (Blue) A7502-18 or A7502-18-HS 2.5mm Thinned Latex paint, Multi-spec, Solvent Adhesives, Wax based strippers A7503-25 A7503-25 A7503-SET-25 D or D-HS (Silver) A7502-25 or A7502-25-HS WARNING: Cancer and Reproductive Harm - wwwP65Warnings.ca.gov