ASP Street Defender OC Inserts, Pepper Spray Refill Safety- inserts are readily replaceable, Laser engraved expiration date coded to assure reliability Activation- Precision spring valve, Horizontal discharge, Cone-shaped dispersion Body- worlds smallest aerosol cans, Seamless aluminum, Impact extruded, Extra-long ferrule, Gasket sealed Test Insert- training module, get familiar with your Defender with this harmless inert spray; operates the same way as the original canister Street Defender Inserts- 13 grams; Thirty one-half second bursts; Effective range ten feet