Arrowhead Forensics Reflective Chalk Pack of 3

Reflective Chalk can be used to create reflective markings which can be illuminated by photoflash or flashlight. Perfect for illuminating the location of evidence that would not normally show in night-time photography, or for use at accident investigations to indicate skid marks and highlight relevant debris. Simply draw any desired marks with the fluorescent yellow chalk and photograph normally. Comes in a pack of 3.