Def-Tec 56833 First Defense 360 MK-3 1.3% Stream. The MK-3 canister size delivers 1.3% MC% food grade formula that is non-flammable and Electronic Discharge Weapon (EDW) safe. The First Defense 360 system delivers consistent stream pattern at any angle and any orientation. High quality is ensured through an ISO rated manufacturing facility. Independent laboratories confirm our products are consistently made to exacting standards. The red color band denotes the 1.3% MC% strength formula. While using flip top safety/activator, this stream will travel up to 10-12 feet. This minimizes cross contamination and assists in targeting one person. This type of application targets the skin and eyes. The MK-3 canister size delivers about 6-8 short bursts and is designed to fit in smaller carry pouches. With Stream Delivery System. can only be purchased by a person of 18 years of age or older