S1 Metal Nozzle: 

These are Prevost Prevo blow guns. They have a metal tip and have the Euro High Flow fitting attached to them, so make sure you have Euro High Flow couplers ready.

Specs:

• Blowing force (at 87 psi): 14 oz. 
• Air consumption (at 87 psi): 13 SCFM
• Noise Level (at 87 psi): 89 dBA

S1 OSHA:

These are OSHA-compliant blowguns. They have a polyamide composite tip that has side vents for maximum safety. These have the Euro High Flow fitting attached to them, so make sure you have Euro High Flow couplers ready.

Specs:

• Blowing force (at 87 psi): 9 oz. 
• Air consumption (at 87 psi): 7.7 SCFM
• Noise Level (at 87 psi): 87 dBA