It also provides make-up water to the system in the event of system leaks

This self-contained battery-powered unit will sound a loud alarm the second it gets wet

compressed air

Features self recharging

This fiberglass is an economy fiberglass which is lighter

4-1/2" DIAMOND CUTOFF WHEEL 100X LONGER LIFE AIR DUSTERS It also provides make-up waterSpyder Diamond Bite universal cut off wheels feature a diamond abrasive edge, combined with a shatter resistant steel core. Together, these ensure safe operation, reduced dust and debris and a much longer working life than typical wheels up to 100x more cuts. For use on most materials including steel, stainless steel, cast iron, rebar, masonry, ceramic tile, composites, and more.