The Frey Scientific 586695 is a package of size 4 cork stoppers for sealing containers (sold separately). It has a 16mm top diameter and 12mm bottom diameter. The XX-grade coarse-grained stopper may include some irregularities and is corrosion resistant. The package contains 100 stoppers.
Science education products incorporate applied math and science principles into classroom and homeschool-based projects. Teachers in pre-K, elementary, and secondary classrooms use science education kits and products alongside science, technology, engineering, and math (STEM) curriculum to demonstrate STEM concepts and real-world applications through hands-on activities. Science education projects include a broad range of activities, such as practical experiments in engineering, aeronautics, robotics, energy, chemistry, physics, biology, and geology.
School Specialty manufactures and distributes instructional materials and supplies under dozens of brands, among them Abilitations, Think Math, Speech Bin, Delta Education, Frey Scientific, Sax, Sportime, Childcraft, and School Smart. The company, founded in 1959, is headquartered in Greenville, WI.