The Filler Detective auto body filler finder tools are designed to find hidden body damage and body filler on a car, truck, or motorcycle. They not only tell you where the filler is, but how deep it is also. Their unique one-button design has LED alert lights and they sound off when they detect exactly where the auto body filler is. They fit in a standard shirt pocket and have a stainless steel belt clip, a low battery indicator, a lanyard for ready hand-held access, and even include a screwdriver for the battery cover. The Filler Detective auto body filler finder tools have bright green rubberized paint for visibility and durability. They are manufactured from high-grade ASA automotive plastic and feature a microfiber contact pad to prevent paint scratches.