4"L x 3-7/8"W x 2"H USA manufactured, molded, carbon-filled, copolymer polypropylene plastic bins protect your electronic components from typical electromagnetic interference (EMI), electrostatic or induced fields. Surface resistivity is less than 10⁵ Ohms-per square. Easy access to stored items with hopper front bin and label holder provides fast identification. The conductive material provides a barrier which these fields cannot penetrate and prevents the build-up of electrostatic charge. Bins are permanently conductive and are unaffected by washing with normal cleaners. Be sure all units are properly grounded according to your use. Color is Black.