These are unquestionably the finest brushes available for developing latent fingerprints. Thousands of specially selected fiberglass filaments form a cloudlike, soft cluster that retains powder and eliminates the constant powder replenishment required for conventional brushes. They are produced on a perfectly balanced, black, injection-molded handle for the ultimate in control. The brush is supplied in a protective container and cap. This standard sized brush measures 4 1/4" long.
It's also available in a "kit" size 2 3/4" long (SKU: 122L1) which fits perfectly in most Sirchie fingerprint kits.