These insulating screw washers for use on motherboards, PCB's and circuit boards. The screw washers are made of fiber material. Red fiber washers for your machine builders out there. Product dimensions: 1.2" Width x 1.2" Depth x 0.04" Height Product weight: 0.04 lb Round Shape Fiber Material Size: 32" Color: Red Usage Tips: - Additional info: - GR-FBW-32-RED #01350