Made of Nitrile Butadiene Rubber (NBR), it withstands heat up to 226 F. The Strike Industries Bang Band Mini gives you the ability to add additional grip to a pistol grip, magazine or any small sized object. The grooves and anti-slip texture gives you better handling and feeling of your weapon. The positive tactical feeling enhances your pistol grip and/or magazine with an additional gripping surface for your dominant and/or support hand. The 34mm (1.34) diameter by 14.7mm (0.58) wide Strike Bang Band Mini is strong and durable for you to also use in other applications when a standard rubber band just is not enough. Try it on a scope magnification adjustment ring within the Bang Band Mini size range as an enhanced and slim scope accessory.