Durable, free-standing rubber striker for tuning forks Provides optimal sustain when activating both high and low frequency tuning forks, with minimal noise from the strike Use activator as a surface to firmly strike end of tuning fork to begin vibration Great for scientists, musicians, students, and teachers For all tuning fork frequencies Durable, free-standing rubber tuning fork striker. The activator provides optimal sustain when activating high and low frequency tuning forks, with minimal noise from the strike itself. The rubber surface prevents scratching or damaging the tuning forks. To use, firmly strike the end of a tuning fork to begin vibration. Measures 4" wide, 2.3" long and 1.6" in height. Great for scientists, musicians, students, and teachers. Accomodates all tuning fork frequencies. Eisco Labs proudly manufactures its own products using state-of-the-art equipment, and following the highest standards of quality control. Each product is carefully designed by a team of laboratory professionals and experienced engineers with quality and durability in mind. They are manufactured with only the highest grade, raw materials and according to international quality standards to ensure that they can withstand use in even the toughest laboratory environments.