Classroom kits with grey magnetic powder are easily used on shiny surfaces, such as plastic containers. Magnetic powder requires use of a magnetic wand (included.) Apply magnetic powder lightly, with brushing strokes. Only the powder should touch the print surface. Do not allow the wand to touch the surface. This kit was created and priced for educational use. It has enough supplies for 4 work groups. The latent fingerprint kit is is a real print kit, fully stocked, with instructions. Includes enough supplies for at least 100 different print lifts. Each kit also includes a 60 page FBI Fingerprinting Manual on a USB drive. 4- Containers of regular latent powder 4- Lifting tape rolls, clear, 360 X 1.5 inches 4- Fingerprint brushes, extra soft 100- Fingerprint backing cards, white backed 1- Storage case