TEX Ultra Light Magnetic Applicator Designed by JR Davis, retired from the Houston Police Department, TEX can be used at hazardous crime scenes and then the outside cover discarded. A new cover is put on and you can continue working. This will help prevent contamination from surface to surface, from your brush to your kit and from your brush to your jar of powder. Each TEX disposable magnetic brush comes with four additional replacement covers, so it is like having five clean, new brushes to work with. The name of this magnetic brush, TEX, comes from the shape. (It resembles a tall, skinny person wearing a cowboy hat.) Designed by J.R. Davis for use at hazardous crime scenes, the TEX Ultra-Light is a lightweight and powerful magnetic applicator. •Includes five disposable covers to protect the wand during use and eliminate the chance of cross-contaminating evidence •Use a separate cover at each crime scene, or use one for each color of powder •When finished dusting, simply pull the cover away from the magnet to release the ball of powder