Wire Pull™ smoke grenades are the best in the business; we set the bar far too high for other pyrotechnic companies to come close. Modest praise indeed; we cannot apologize for our lack of humility until another smoke effect steps up to challenge our work. The moment you see our smoke burst into action you will be amazed at the colored cloud that it produces. With a steady 90 second smoke output the WP40 is the best you can get for the price. Pull the ring sideways and our military grade Wire Pull™ igniter will kick start the smoke grenade into a beautiful plume of smoke. Our labelling is designed to be easy to read so the product is super easy to use.