The outer casing of the unit is constructed from metal. The thumb Tallies button makes Clicks when it is depressed, so it is easy to track and use accurately Use counter Clickers for ticket takers at Sport, or to count attendance, baseball Pitches count, or car parking Tallies. Track anything that requires counting with this trackers that tallies from 0-9999 The four-digit display on this Tallies counter Clickers features easy-to-read white number on a black background. Use the knob on the side of the hand counter to resets your count quickly and easily This people counter includes handheld use as well as a removable base with screw holes that can be used fastener the unit to a table. Mounting hardware is not included Includes Clicks Counter Handheld Clickers with Removable Mountable Base. Mounting Hardware Not Included, Manufacturer: ZBIianxer