●Easy to use. Pin a thin strip of paper over each wing to hold them flat until they dry out. bug display box ●made from PVC material for long time and durable use. bug display box ●With it, elementary and junior high school students can easily fix and spread insect wings. bug display box ●You can easily place a moth, butterflies, or other insects body in the indentation on the spreading board. bug display box ●Designed for spreading insect wings prior to mounting. great for allowing butterflies wings to spread and dry. bug display box