Fox Labs pepper spray grenades are hand held throwing units with a lock on continuous discharge tops. After activation, they will spin in a 360 degree circle on hard flat surfaces completely spewing their contents in about 10 seconds for the 2 oz. canister and about 30 seconds for the 6 ounce canister. They are ideal for control and disbursement of crowds or securing a confined area. The 2 oz. unit will empty itself in about 10 seconds and the 6 oz. canister will empty in about 30 seconds The Extraction model includes a 3 foot flexible vinyl tube with a plastic tip. The push button top allows you to control how much spray you wish to use.