The 1 oz. MK-2 canister will deliver 7-10 short bursts of OC at an effective range of 10-12 ft.? The stream delivery method provides a target-specific, strong concentrated stream for greater standoff. The grey banded canister indicates the unique OC/CS formulation which targets the respiratory system.? The MK-2 is an ideal size for patrol officers to wear on a duty belt. This formulation has been tested and is non-flammable, but is NOT Electronic Discharge Weapon (EDW) safe.? Defense Technology First Defense OC Aerosols are produced in an ISO rated manufacturing facility. All Major Capsaicinoid percentages (MC%) are verified by an Independent Laboratory for quality assurance. The MK-2 is an ideal size for patrol officers to wear on a duty belt and?will deliver 7-10 short bursts of OC at an effective range of 10-12 ft. This OC/CS aerosol product utilizes a stream delivery method providing a target-specific, strong concentrated stream for greater standoff.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }