The Branick Industries Model BTT-5700E Adjustable Height Electronic Tire Tester and Inspector detects punctures, partial penetrations and metal objects still in the tread. A detected flaw stops tire rotation and the Flaw light and visible spark ensure it won't be missed. The adjustable height platform provides an ergonomic working environment and the swivel arm operator panel makes it easy to reach the controls. This unit can function in both automatic and manual modes, and can handle tires up to 24.5" bead diameter and 18" cross section. All probe heads include the quick-change system for fast change over. A medium truck probe head is included with the unit, and other pobe head sizes are available to ensure complete coverage of all tire types.